diff --git a/google/iam/credentials/v1/BUILD.bazel b/google/iam/credentials/v1/BUILD.bazel
index eeff7e1cab..3025ee5e65 100644
--- a/google/iam/credentials/v1/BUILD.bazel
+++ b/google/iam/credentials/v1/BUILD.bazel
@@ -60,6 +60,7 @@ java_gapic_library(
     name = "credentials_java_gapic",
     src = ":credentials_proto_with_info",
     gapic_yaml = "iamcredentials_gapic.yaml",
+    grpc_service_config = "iamcredentials_grpc_service_config.json",
     package = "google.iam.credentials.v1",
     service_yaml = "//google/iam/credentials:iamcredentials_v1.yaml",
     test_deps = [
@@ -180,6 +181,7 @@ py_gapic_library(
     name = "credentials_py_gapic",
     src = ":credentials_proto_with_info",
     gapic_yaml = "iamcredentials_gapic.yaml",
+    grpc_service_config = "iamcredentials_grpc_service_config.json",
     package = "google.iam.credentials.v1",
     service_yaml = "//google/iam/credentials:iamcredentials_v1.yaml",
     deps = [
@@ -224,6 +226,7 @@ php_gapic_library(
     name = "credentials_php_gapic",
     src = ":credentials_proto_with_info",
     gapic_yaml = "iamcredentials_gapic.yaml",
+    grpc_service_config = "iamcredentials_grpc_service_config.json",
     package = "google.iam.credentials.v1",
     service_yaml = "//google/iam/credentials:iamcredentials_v1.yaml",
     deps = [
diff --git a/google/iam/credentials/v1/iamcredentials_gapic.yaml b/google/iam/credentials/v1/iamcredentials_gapic.yaml
index 6368f96b5f..32d7cab805 100644
--- a/google/iam/credentials/v1/iamcredentials_gapic.yaml
+++ b/google/iam/credentials/v1/iamcredentials_gapic.yaml
@@ -20,12 +20,3 @@ language_settings:
 interfaces:
 # The fully qualified name of the API interface.
 - name: google.iam.credentials.v1.IAMCredentials
-  methods:
-  - name: GenerateAccessToken
-    retry_codes_name: idempotent
-  - name: GenerateIdToken
-    retry_codes_name: idempotent
-  - name: SignBlob
-    retry_codes_name: idempotent
-  - name: SignJwt
-    retry_codes_name: idempotent