diff --git a/apex/bootclasspath_fragment_test.go b/apex/bootclasspath_fragment_test.go
index 25131eec6..fd2f3c5d1 100644
--- a/apex/bootclasspath_fragment_test.go
+++ b/apex/bootclasspath_fragment_test.go
@@ -833,6 +833,7 @@ func TestBootclasspathFragment_HiddenAPIList(t *testing.T) {
 	`)
 
 	java.CheckModuleDependencies(t, result.TestContext, "mybootclasspathfragment", "android_common_apex10000", []string{
+		"all_apex_contributions",
 		"art-bootclasspath-fragment",
 		"bar",
 		"dex2oatd",
@@ -1003,6 +1004,7 @@ func TestBootclasspathFragment_AndroidNonUpdatable_FromSource(t *testing.T) {
 	`)
 
 	java.CheckModuleDependencies(t, result.TestContext, "mybootclasspathfragment", "android_common_apex10000", []string{
+		"all_apex_contributions",
 		"android-non-updatable.stubs",
 		"android-non-updatable.stubs.module_lib",
 		"android-non-updatable.stubs.system",
@@ -1174,6 +1176,7 @@ func TestBootclasspathFragment_AndroidNonUpdatable_FromText(t *testing.T) {
 	`)
 
 	java.CheckModuleDependencies(t, result.TestContext, "mybootclasspathfragment", "android_common_apex10000", []string{
+		"all_apex_contributions",
 		"android-non-updatable.stubs",
 		"android-non-updatable.stubs.system",
 		"android-non-updatable.stubs.test",
@@ -1326,6 +1329,7 @@ func TestBootclasspathFragment_AndroidNonUpdatable_AlwaysUsePrebuiltSdks(t *test
 	`)
 
 	java.CheckModuleDependencies(t, result.TestContext, "mybootclasspathfragment", "android_common_apex10000", []string{
+		"all_apex_contributions",
 		"art-bootclasspath-fragment",
 		"bar",
 		"dex2oatd",
diff --git a/java/bootclasspath_fragment.go b/java/bootclasspath_fragment.go
index bef3b58c8..fe4cc7685 100644
--- a/java/bootclasspath_fragment.go
+++ b/java/bootclasspath_fragment.go
@@ -463,6 +463,12 @@ func (b *BootclasspathFragmentModule) DepsMutator(ctx android.BottomUpMutatorCon
 	// Add a dependency onto the dex2oat tool which is needed for creating the boot image. The
 	// path is retrieved from the dependency by GetGlobalSoongConfig(ctx).
 	dexpreopt.RegisterToolDeps(ctx)
+
+	// Add a dependency to `all_apex_contributions` to determine if prebuilts are active.
+	// If prebuilts are active, `contents` validation on the source bootclasspath fragment should be disabled.
+	if _, isPrebuiltModule := ctx.Module().(*PrebuiltBootclasspathFragmentModule); !isPrebuiltModule {
+		ctx.AddDependency(b, android.AcDepTag, "all_apex_contributions")
+	}
 }
 
 func (b *BootclasspathFragmentModule) BootclasspathDepsMutator(ctx android.BottomUpMutatorContext) {