diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 292a1cf12b..d8695db306 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -7,7 +7,7 @@ android-java = "21"
 
 kotlin = "2.4.21"
 ksp = "2.3.12"
-metro = "1.4.5"
+metro = "1.5.1"
 kotlinx-coroutines = "1.11.0"
 kotlinx-serialization = "1.12.0"
 kotlinx-datetime = "0.8.0"
diff --git a/services/opencode/build.gradle.kts b/services/opencode/build.gradle.kts
index 9b4d01b18f..3101c16751 100644
--- a/services/opencode/build.gradle.kts
+++ b/services/opencode/build.gradle.kts
@@ -6,8 +6,9 @@ plugins {
 }
 
 // Metro generates this module's provider factories for the desktop graph. Through Dagger's factories
-// instead, Metro 1.4.5 drops provider-level @Singleton (it does not read @ScopeMetadata), so each
-// injection site got its own ChannelEventBus.
+// instead, Metro 1.4.5 dropped provider-level @Singleton (it does not read @ScopeMetadata), so each
+// injection site got its own ChannelEventBus; Metro 1.5 rejects them outright
+// (UnprocessedUpstreamDeclaration).
 metro {
     interop {
         includeJavax()