diff --git a/cc/library.go b/cc/library.go
index c402ea0..0f33611 100644
--- a/cc/library.go
+++ b/cc/library.go
@@ -1333,6 +1333,7 @@
 		rule := android.NewRuleBuilder()
 		rule.Command().
 			BuiltTool(ctx, "bssl_inject_hash").
+			Flag("-sha256").
 			FlagWithInput("-in-object ", outputFile).
 			FlagWithOutput("-o ", hashedOutputfile)
 		rule.Build(pctx, ctx, "injectCryptoHash", "inject crypto hash")