diff --git a/versions.env b/versions.env
index 59a504c..e19b8de 100644
--- a/versions.env
+++ b/versions.env
@@ -1,10 +1,10 @@
 # Pinned upstream versions built and published by CI.
 # check-releases.yml compares these against the latest GitHub releases daily.
-SERIALIZE_VERSION=1.15.0
-RELIABLE_VERSION=1.4.0
-NETCODE_VERSION=1.4.3
-YOJIMBO_VERSION=1.10.1
-SCHEMA_VERSION=2.0.0
+SERIALIZE_VERSION=1.16.0
+RELIABLE_VERSION=1.4.2
+NETCODE_VERSION=1.4.5
+YOJIMBO_VERSION=1.12.1
+SCHEMA_VERSION=2.4.0
 
 # Go toolchain that builds the schema package, pinned like the packages
 # themselves. scripts/install-go.sh fetches the official tarball from go.dev