diff --git a/dependencies.properties b/dependencies.properties
index ea2c7cdf9..92e3936d3 100644
--- a/dependencies.properties
+++ b/dependencies.properties
@@ -64,8 +64,8 @@ maven.com_google_auto_value_auto_value=com.google.auto.value:auto-value:1.4
 maven.com_google_auto_value_auto_value_annotations=com.google.auto.value:auto-value-annotations:1.7.4
 maven.com_google_api_api_common=com.google.api:api-common:1.10.1
 maven.org_threeten_threetenbp=org.threeten:threetenbp:1.5.0
-maven.com_google_api_grpc_grpc_google_iam_v1=com.google.api.grpc:grpc-google-iam-v1:1.0.7
-maven.com_google_api_grpc_proto_google_iam_v1=com.google.api.grpc:proto-google-iam-v1:1.0.7
+maven.com_google_api_grpc_grpc_google_iam_v1=com.google.api.grpc:grpc-google-iam-v1:1.0.9
+maven.com_google_api_grpc_proto_google_iam_v1=com.google.api.grpc:proto-google-iam-v1:1.0.9
 maven.com_google_http_client_google_http_client=com.google.http-client:google-http-client:1.38.1
 maven.com_google_http_client_google_http_client_gson=com.google.http-client:google-http-client-gson:1.38.1
 maven.org_codehaus_mojo_animal_sniffer_annotations=org.codehaus.mojo:animal-sniffer-annotations:1.18