diff --git a/pom.xml b/pom.xml
index 6258a966fb..0dd69479e7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -154,7 +154,7 @@
     <gax.version>2.19.4</gax.version>
     <google.api-common.version>2.2.1</google.api-common.version>
     <google.common-protos.version>2.9.6</google.common-protos.version>
-    <google.iam.version>1.6.4</google.iam.version>
+    <google.iam.version>1.6.6</google.iam.version>
     <google.auth.version>1.12.1</google.auth.version>
     <google.api.version>2.0.0</google.api.version>
     <google.http.version>1.42.2</google.http.version>