diff --git a/modules/perfview b/modules/perfview
index e343a0cf01..9c4f637c48 160000
--- a/modules/perfview
+++ b/modules/perfview
@@ -1 +1 @@
-Subproject commit e343a0cf01305c7866c412d4ce708c3e0ec960c8
+Subproject commit 9c4f637c48953d66216adca0f131fc75be99851c
diff --git a/test/Sentry.Profiling.Tests/Resources/README.md b/test/Sentry.Profiling.Tests/Resources/README.md
index db5693a9ee..68e2c3f37a 100644
--- a/test/Sentry.Profiling.Tests/Resources/README.md
+++ b/test/Sentry.Profiling.Tests/Resources/README.md
@@ -49,3 +49,27 @@ And for reference, you can create a JSON that can be displayed by [SpeedScope](h
 ```shell-script
 dotnet-trace convert sample.nettrace --format Speedscope
 ```
+
+## Regenerating `sample.etlx` after a perfview submodule bump
+
+`sample.etlx` is committed, and its format version is tied to the TraceEvent build in
+`modules/perfview`. A submodule bump can therefore leave it unreadable, which surfaces as:
+
+```
+FastSerialization.SerializationException : File format is version 74 App accepts formats >= 78.
+```
+
+To regenerate it, delete the file and run the tests once — `TraceLogProcessorTests` rebuilds it from
+`sample.nettrace` when it is absent:
+
+```shell-script
+rm test/Sentry.Profiling.Tests/Resources/sample.etlx
+dotnet test test/Sentry.Profiling.Tests --filter "FullyQualifiedName~TraceLogProcessorTests"
+```
+
+Then commit the regenerated file, along with any `*.verified.txt` snapshot changes it produces
+(`pwsh ./scripts/accept-verifier-changes.ps1` — review the diff, module names in particular).
+
+Do **not** leave it uncommitted and rely on regeneration at test time. The path is shared by every
+target framework, and `dotnet test` runs one host per TFM, so they race on both this file and the
+`sample.etlx.new` temp that TraceEvent writes alongside it.
diff --git a/test/Sentry.Profiling.Tests/Resources/sample.etlx b/test/Sentry.Profiling.Tests/Resources/sample.etlx
index 2639f75ee0..2b03e5922a 100644
Binary files a/test/Sentry.Profiling.Tests/Resources/sample.etlx and b/test/Sentry.Profiling.Tests/Resources/sample.etlx differ
diff --git a/test/Sentry.Profiling.Tests/TraceLogProcessorTests.ProfileInfo_Serialization_Works.verified.txt b/test/Sentry.Profiling.Tests/TraceLogProcessorTests.ProfileInfo_Serialization_Works.verified.txt
index 481fcf2e42..8106a2d6f6 100644
--- a/test/Sentry.Profiling.Tests/TraceLogProcessorTests.ProfileInfo_Serialization_Works.verified.txt
+++ b/test/Sentry.Profiling.Tests/TraceLogProcessorTests.ProfileInfo_Serialization_Works.verified.txt
@@ -251,17 +251,17 @@
     frames: [
       {
         function: System.IO.Pipes.PipeStream.ReadCore(value class System.Span`1<unsigned int8>),
-        module: System.IO.Pipes.il,
+        module: System.IO.Pipes,
         in_app: false
       },
       {
         function: System.IO.Pipes.PipeStream.Read(unsigned int8[],int32,int32),
-        module: System.IO.Pipes.il,
+        module: System.IO.Pipes,
         in_app: false
       },
       {
         function: System.IO.BinaryReader.ReadBytes(int32),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
@@ -344,142 +344,142 @@
       },
       {
         function: System.Threading.LowLevelLifoSemaphore.WaitForSignal(int32),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
         function: System.Threading.LowLevelLifoSemaphore.Wait(int32,bool),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
         function: System.Threading.PortableThreadPool+WorkerThread.WorkerThreadStart(),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
         function: System.Threading.Thread.StartCallback(),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
         function: System.Threading.WaitHandle.WaitOneNoCheck(int32),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
         function: System.Threading.WaitHandle.WaitOne(int32),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
         function: System.Threading.PortableThreadPool+GateThread.GateThreadStart(),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
         function: System.Text.Unicode.Utf8Utility.TranscodeToUtf16(unsigned int8*,int32,wchar*,int32,unsigned int8*&,wchar*&),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
         function: System.Text.UTF8Encoding.GetChars(unsigned int8*,int32,wchar*,int32),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
         function: System.String.CreateStringFromEncoding(unsigned int8*,int32,class System.Text.Encoding),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
         function: System.Reflection.MdFieldInfo.get_Name(),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
         function: System.Diagnostics.Tracing.EventSource.AddProviderEnumKind(class System.Diagnostics.Tracing.ManifestBuilder,class System.Reflection.FieldInfo,class System.String),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
         function: System.Diagnostics.Tracing.EventSource.CreateManifestAndDescriptors(class System.Type,class System.String,class System.Diagnostics.Tracing.EventSource,value class System.Diagnostics.Tracing.EventManifestOptions),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
         function: System.Diagnostics.Tracing.EventSource.EnsureDescriptorsInitialized(),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
         function: System.Diagnostics.Tracing.EventSource.DoCommand(class System.Diagnostics.Tracing.EventCommandEventArgs),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
         function: System.Diagnostics.Tracing.EventSource.SendCommand(class System.Diagnostics.Tracing.EventListener,value class System.Diagnostics.Tracing.EventProviderType,int32,int32,value class System.Diagnostics.Tracing.EventCommand,bool,value class System.Diagnostics.Tracing.EventLevel,value class System.Diagnostics.Tracing.EventKeywords,class System.Collections.Generic.IDictionary`2<class System.String,class System.String>),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
         function: System.Diagnostics.Tracing.EventSource+OverrideEventProvider.OnControllerCommand(value class System.Diagnostics.Tracing.ControllerCommand,class System.Collections.Generic.IDictionary`2<class System.String,class System.String>,int32,int32),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
         function: System.Diagnostics.Tracing.EventProvider.EtwEnableCallBack(value class System.Guid&,int32,unsigned int8,int64,int64,value class EVENT_FILTER_DESCRIPTOR*,void*),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
         function: System.IO.Stream+<>c.<BeginReadInternal>b__40_0(class System.Object),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
         function: System.Threading.Tasks.Task`1[System.Int32].InnerInvoke(),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
         function: System.Threading.Tasks.Task+<>c.<.cctor>b__272_0(class System.Object),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
         function: System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(class System.Threading.Thread,class System.Threading.ExecutionContext,class System.Threading.ContextCallback,class System.Object),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
         function: System.Threading.Tasks.Task.ExecuteWithThreadLocal(class System.Threading.Tasks.Task&,class System.Threading.Thread),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
         function: System.Threading.Tasks.Task.ExecuteEntryUnsafe(class System.Threading.Thread),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
         function: System.Threading.Tasks.Task.ExecuteFromThreadPool(class System.Threading.Thread),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
         function: System.Threading.ThreadPoolWorkQueue.Dispatch(),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
         function: System.Collections.Concurrent.ConcurrentDictionary`2[System.__Canon,System.IntPtr].TryAddInternal(!0,value class System.Nullable`1<int32>,!1,bool,bool,!1&),
-        module: System.Collections.Concurrent.il,
+        module: System.Collections.Concurrent,
         in_app: false
       },
       {
         function: System.Collections.Concurrent.ConcurrentDictionary`2[System.__Canon,System.IntPtr].set_Item(!0,!1),
-        module: System.Collections.Concurrent.il,
+        module: System.Collections.Concurrent,
         in_app: false
       },
       {
@@ -502,12 +502,12 @@
       },
       {
         function: System.MulticastDelegate.CombineImpl(class System.Delegate),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
         function: System.Delegate.Combine(class System.Delegate,class System.Delegate),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
@@ -597,7 +597,7 @@
       },
       {
         function: System.Collections.Generic.Dictionary`2[System.__Canon,Avalonia.Media.KnownColor]..ctor(class System.Collections.Generic.IEqualityComparer`1<!0>),
-        module: System.Private.CoreLib.il,
+        module: System.Private.CoreLib,
         in_app: false
       },
       {
@@ -1022,4 +1022,4 @@
       }
     ]
   }
-}
+}
\ No newline at end of file
diff --git a/test/Sentry.Profiling.Tests/TraceLogProcessorTests.Profile_Serialization_Works.verified.txt b/test/Sentry.Profiling.Tests/TraceLogProcessorTests.Profile_Serialization_Works.verified.txt
index 7720ab6755..55f60e511c 100644
--- a/test/Sentry.Profiling.Tests/TraceLogProcessorTests.Profile_Serialization_Works.verified.txt
+++ b/test/Sentry.Profiling.Tests/TraceLogProcessorTests.Profile_Serialization_Works.verified.txt
@@ -228,17 +228,17 @@
   frames: [
     {
       function: System.IO.Pipes.PipeStream.ReadCore(value class System.Span`1<unsigned int8>),
-      module: System.IO.Pipes.il,
+      module: System.IO.Pipes,
       in_app: false
     },
     {
       function: System.IO.Pipes.PipeStream.Read(unsigned int8[],int32,int32),
-      module: System.IO.Pipes.il,
+      module: System.IO.Pipes,
       in_app: false
     },
     {
       function: System.IO.BinaryReader.ReadBytes(int32),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
@@ -321,142 +321,142 @@
     },
     {
       function: System.Threading.LowLevelLifoSemaphore.WaitForSignal(int32),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
       function: System.Threading.LowLevelLifoSemaphore.Wait(int32,bool),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
       function: System.Threading.PortableThreadPool+WorkerThread.WorkerThreadStart(),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
       function: System.Threading.Thread.StartCallback(),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
       function: System.Threading.WaitHandle.WaitOneNoCheck(int32),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
       function: System.Threading.WaitHandle.WaitOne(int32),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
       function: System.Threading.PortableThreadPool+GateThread.GateThreadStart(),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
       function: System.Text.Unicode.Utf8Utility.TranscodeToUtf16(unsigned int8*,int32,wchar*,int32,unsigned int8*&,wchar*&),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
       function: System.Text.UTF8Encoding.GetChars(unsigned int8*,int32,wchar*,int32),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
       function: System.String.CreateStringFromEncoding(unsigned int8*,int32,class System.Text.Encoding),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
       function: System.Reflection.MdFieldInfo.get_Name(),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
       function: System.Diagnostics.Tracing.EventSource.AddProviderEnumKind(class System.Diagnostics.Tracing.ManifestBuilder,class System.Reflection.FieldInfo,class System.String),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
       function: System.Diagnostics.Tracing.EventSource.CreateManifestAndDescriptors(class System.Type,class System.String,class System.Diagnostics.Tracing.EventSource,value class System.Diagnostics.Tracing.EventManifestOptions),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
       function: System.Diagnostics.Tracing.EventSource.EnsureDescriptorsInitialized(),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
       function: System.Diagnostics.Tracing.EventSource.DoCommand(class System.Diagnostics.Tracing.EventCommandEventArgs),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
       function: System.Diagnostics.Tracing.EventSource.SendCommand(class System.Diagnostics.Tracing.EventListener,value class System.Diagnostics.Tracing.EventProviderType,int32,int32,value class System.Diagnostics.Tracing.EventCommand,bool,value class System.Diagnostics.Tracing.EventLevel,value class System.Diagnostics.Tracing.EventKeywords,class System.Collections.Generic.IDictionary`2<class System.String,class System.String>),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
       function: System.Diagnostics.Tracing.EventSource+OverrideEventProvider.OnControllerCommand(value class System.Diagnostics.Tracing.ControllerCommand,class System.Collections.Generic.IDictionary`2<class System.String,class System.String>,int32,int32),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
       function: System.Diagnostics.Tracing.EventProvider.EtwEnableCallBack(value class System.Guid&,int32,unsigned int8,int64,int64,value class EVENT_FILTER_DESCRIPTOR*,void*),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
       function: System.IO.Stream+<>c.<BeginReadInternal>b__40_0(class System.Object),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
       function: System.Threading.Tasks.Task`1[System.Int32].InnerInvoke(),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
       function: System.Threading.Tasks.Task+<>c.<.cctor>b__272_0(class System.Object),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
       function: System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(class System.Threading.Thread,class System.Threading.ExecutionContext,class System.Threading.ContextCallback,class System.Object),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
       function: System.Threading.Tasks.Task.ExecuteWithThreadLocal(class System.Threading.Tasks.Task&,class System.Threading.Thread),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
       function: System.Threading.Tasks.Task.ExecuteEntryUnsafe(class System.Threading.Thread),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
       function: System.Threading.Tasks.Task.ExecuteFromThreadPool(class System.Threading.Thread),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
       function: System.Threading.ThreadPoolWorkQueue.Dispatch(),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
       function: System.Collections.Concurrent.ConcurrentDictionary`2[System.__Canon,System.IntPtr].TryAddInternal(!0,value class System.Nullable`1<int32>,!1,bool,bool,!1&),
-      module: System.Collections.Concurrent.il,
+      module: System.Collections.Concurrent,
       in_app: false
     },
     {
       function: System.Collections.Concurrent.ConcurrentDictionary`2[System.__Canon,System.IntPtr].set_Item(!0,!1),
-      module: System.Collections.Concurrent.il,
+      module: System.Collections.Concurrent,
       in_app: false
     },
     {
@@ -479,12 +479,12 @@
     },
     {
       function: System.MulticastDelegate.CombineImpl(class System.Delegate),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
       function: System.Delegate.Combine(class System.Delegate,class System.Delegate),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
@@ -574,7 +574,7 @@
     },
     {
       function: System.Collections.Generic.Dictionary`2[System.__Canon,Avalonia.Media.KnownColor]..ctor(class System.Collections.Generic.IEqualityComparer`1<!0>),
-      module: System.Private.CoreLib.il,
+      module: System.Private.CoreLib,
       in_app: false
     },
     {
@@ -998,4 +998,4 @@
       stack_id: 18
     }
   ]
-}
+}
\ No newline at end of file
diff --git a/test/Sentry.Profiling.Tests/TraceLogProcessorTests.verify.cs b/test/Sentry.Profiling.Tests/TraceLogProcessorTests.verify.cs
index 5b4307e951..50aa52a39a 100644
--- a/test/Sentry.Profiling.Tests/TraceLogProcessorTests.verify.cs
+++ b/test/Sentry.Profiling.Tests/TraceLogProcessorTests.verify.cs
@@ -50,13 +50,16 @@ private SampleProfile GetProfile()
         if (!File.Exists(etlxFilePath))
         {
             var etlFilePath = Path.ChangeExtension(etlxFilePath, "nettrace");
-            var source = new EventPipeEventSource(etlFilePath);
-            typeof(TraceLog)
-            .GetMethod(
+            using var source = new EventPipeEventSource(etlFilePath);
+            var createFromEventPipeEventSources = typeof(TraceLog).GetMethod(
                 "CreateFromEventPipeEventSources",
                 BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static,
-                new Type[] { typeof(TraceEventDispatcher), typeof(string), typeof(TraceLogOptions) })?
-            .Invoke(null, new object[] { source, etlxFilePath, new TraceLogOptions() { ContinueOnError = true } });
+                new Type[] { typeof(TraceEventDispatcher), typeof(string), typeof(TraceLogOptions) })
+                ?? throw new InvalidOperationException(
+                    "TraceLog.CreateFromEventPipeEventSources was not found. Has the perfview submodule changed its signature?");
+
+            createFromEventPipeEventSources.Invoke(
+                null, new object[] { source, etlxFilePath, new TraceLogOptions() { ContinueOnError = true } });
         }
 
         using var traceLog = new TraceLog(etlxFilePath);