diff --git a/Scripts/CI/ag_setup.sh b/Scripts/CI/ag_setup.sh
index 2962dc5f..ad85fca4 100755
--- a/Scripts/CI/ag_setup.sh
+++ b/Scripts/CI/ag_setup.sh
@@ -6,7 +6,7 @@ filepath() {
 }
 
 REPO_ROOT="$(dirname $(dirname $(dirname $(filepath $0))))"
-DARWINPRIVATEFRAMEWORKS_FALLBACK_REVISION="0cec3b3219dd2d99818e861e3dca7598e7554f98"
+DARWINPRIVATEFRAMEWORKS_FALLBACK_REVISION="157294d5c4d5bde4e13e24347f0f8c50e47c79dc"
 
 clone_checkout_ag() {
   cd $REPO_ROOT
diff --git a/Sources/OpenAttributeGraph/Attribute/Weak/WeakAttribute.swift b/Sources/OpenAttributeGraph/Attribute/Weak/WeakAttribute.swift
index d4135419..6e960f17 100644
--- a/Sources/OpenAttributeGraph/Attribute/Weak/WeakAttribute.swift
+++ b/Sources/OpenAttributeGraph/Attribute/Weak/WeakAttribute.swift
@@ -38,7 +38,7 @@ public import OpenAttributeGraphCxx
 @propertyWrapper
 @dynamicMemberLookup
 public struct WeakAttribute<Value> {
-    var base: AnyWeakAttribute
+    public var base: AnyWeakAttribute
 
     public init(base: AnyWeakAttribute) {
         self.base = base
diff --git a/Tests/OpenAttributeGraphCompatibilityTests/Attribute/Weak/WeakAttributeCompatibilityTests.swift b/Tests/OpenAttributeGraphCompatibilityTests/Attribute/Weak/WeakAttributeCompatibilityTests.swift
index a4976f7b..f471e23f 100644
--- a/Tests/OpenAttributeGraphCompatibilityTests/Attribute/Weak/WeakAttributeCompatibilityTests.swift
+++ b/Tests/OpenAttributeGraphCompatibilityTests/Attribute/Weak/WeakAttributeCompatibilityTests.swift
@@ -15,5 +15,21 @@ struct WeakAttributeCompatibilityTests {
         let attr = Attribute(value: 0)
         _ = WeakAttribute(attr)
     }
+
+    @Test
+    func base() {
+        let first = Attribute(value: 1)
+        let second = Attribute(value: 2)
+        var weak = WeakAttribute(first)
+        #expect(weak.base == AnyWeakAttribute(first.identifier))
+
+        weak.base = AnyWeakAttribute(second.identifier)
+        #expect(weak.attribute == second)
+        #expect(weak.wrappedValue == 2)
+
+        weak.base = AnyWeakAttribute(nil)
+        #expect(weak.attribute == nil)
+        #expect(weak.wrappedValue == nil)
+    }
 }
 #endif