diff --git a/appengine-java8/firebase-tictactoe/pom.xml b/appengine-java8/firebase-tictactoe/pom.xml
index a353a397543..6cf47e6af01 100644
--- a/appengine-java8/firebase-tictactoe/pom.xml
+++ b/appengine-java8/firebase-tictactoe/pom.xml
@@ -52,7 +52,7 @@
     <dependency>
       <groupId>com.google.auth</groupId>
       <artifactId>google-auth-library-oauth2-http</artifactId>
-      <version>0.20.0</version>
+      <version>0.21.0</version>
     </dependency>
     <dependency>
       <groupId>com.google.code.gson</groupId>
diff --git a/bigquery/rest/pom.xml b/bigquery/rest/pom.xml
index 0695c19c409..3e5d9563cfd 100644
--- a/bigquery/rest/pom.xml
+++ b/bigquery/rest/pom.xml
@@ -68,7 +68,7 @@
     <dependency>
       <groupId>com.google.auth</groupId>
       <artifactId>google-auth-library-oauth2-http</artifactId>
-      <version>0.20.0</version>
+      <version>0.21.0</version>
     </dependency>
 
     <!-- Test dependencies -->
diff --git a/compute/cmdline/pom.xml b/compute/cmdline/pom.xml
index 5fe6c3f5b50..91a347a559a 100644
--- a/compute/cmdline/pom.xml
+++ b/compute/cmdline/pom.xml
@@ -40,7 +40,7 @@ limitations under the License.
     <dependency>
       <groupId>com.google.auth</groupId>
       <artifactId>google-auth-library-oauth2-http</artifactId>
-      <version>0.20.0</version>
+      <version>0.21.0</version>
     </dependency>
     <dependency>
       <groupId>com.google.apis</groupId>
diff --git a/endpoints/getting-started/clients/pom.xml b/endpoints/getting-started/clients/pom.xml
index 54dfbfe7df5..919a50766e3 100644
--- a/endpoints/getting-started/clients/pom.xml
+++ b/endpoints/getting-started/clients/pom.xml
@@ -28,7 +28,7 @@
     <dependency>
       <groupId>com.google.auth</groupId>
       <artifactId>google-auth-library-oauth2-http</artifactId>
-      <version>0.20.0</version>
+      <version>0.21.0</version>
     </dependency>
     <dependency>
       <groupId>com.auth0</groupId>
diff --git a/healthcare/v1/pom.xml b/healthcare/v1/pom.xml
index d2cab1a4258..dedc223ff60 100644
--- a/healthcare/v1/pom.xml
+++ b/healthcare/v1/pom.xml
@@ -85,7 +85,7 @@
     <dependency>
       <groupId>com.google.auth</groupId>
       <artifactId>google-auth-library-oauth2-http</artifactId>
-      <version>0.20.0</version>
+      <version>0.21.0</version>
     </dependency>
     <dependency>
       <groupId>com.google.cloud</groupId>
diff --git a/iam/api-client/pom.xml b/iam/api-client/pom.xml
index 480c96cd34f..4584f1e5bdc 100644
--- a/iam/api-client/pom.xml
+++ b/iam/api-client/pom.xml
@@ -46,7 +46,7 @@
     <dependency>
       <groupId>com.google.auth</groupId>
       <artifactId>google-auth-library-oauth2-http</artifactId>
-      <version>0.20.0</version>
+      <version>0.21.0</version>
     </dependency>
     <dependency>
       <groupId>com.google.apis</groupId>
diff --git a/iap/pom.xml b/iap/pom.xml
index 243d4686646..2560c8997d3 100644
--- a/iap/pom.xml
+++ b/iap/pom.xml
@@ -58,7 +58,7 @@
     <dependency>
       <groupId>com.google.auth</groupId>
       <artifactId>google-auth-library-oauth2-http</artifactId>
-      <version>0.20.0</version>
+      <version>0.21.0</version>
     </dependency>
     <dependency>
       <groupId>com.nimbusds</groupId>
diff --git a/iot/api-client/end-to-end-example/pom.xml b/iot/api-client/end-to-end-example/pom.xml
index a8ba716eb08..5b0cdb60d14 100644
--- a/iot/api-client/end-to-end-example/pom.xml
+++ b/iot/api-client/end-to-end-example/pom.xml
@@ -68,7 +68,7 @@
     <dependency>
       <groupId>com.google.auth</groupId>
       <artifactId>google-auth-library-oauth2-http</artifactId>
-      <version>0.20.0</version>
+      <version>0.21.0</version>
     </dependency>
     <dependency>
       <groupId>com.google.guava</groupId>
diff --git a/iot/api-client/manager/pom.xml b/iot/api-client/manager/pom.xml
index b9ea99a0a50..f22fa3cadb4 100644
--- a/iot/api-client/manager/pom.xml
+++ b/iot/api-client/manager/pom.xml
@@ -77,7 +77,7 @@
     <dependency>
       <groupId>com.google.auth</groupId>
       <artifactId>google-auth-library-oauth2-http</artifactId>
-      <version>0.20.0</version>
+      <version>0.21.0</version>
     </dependency>
     <dependency>
       <groupId>com.google.guava</groupId>
diff --git a/jobs/v3/pom.xml b/jobs/v3/pom.xml
index c9b23918836..c868a0ff100 100644
--- a/jobs/v3/pom.xml
+++ b/jobs/v3/pom.xml
@@ -37,7 +37,7 @@
     <dependency>
       <groupId>com.google.auth</groupId>
       <artifactId>google-auth-library-oauth2-http</artifactId>
-      <version>0.20.0</version>
+      <version>0.21.0</version>
     </dependency>
     <!-- [END dependencies] -->
 
diff --git a/mlengine/online-prediction/pom.xml b/mlengine/online-prediction/pom.xml
index 3da65efdd14..e74983f75ae 100644
--- a/mlengine/online-prediction/pom.xml
+++ b/mlengine/online-prediction/pom.xml
@@ -66,7 +66,7 @@ limitations under the License.
     <dependency>
       <groupId>com.google.auth</groupId>
       <artifactId>google-auth-library-oauth2-http</artifactId>
-      <version>0.20.0</version>
+      <version>0.21.0</version>
     </dependency>
     <dependency>
       <groupId>com.google.apis</groupId>
diff --git a/monitoring/cloud-client/pom.xml b/monitoring/cloud-client/pom.xml
index 558c3df0079..54b1f63fd46 100644
--- a/monitoring/cloud-client/pom.xml
+++ b/monitoring/cloud-client/pom.xml
@@ -45,7 +45,7 @@
       <dependency>
         <groupId>com.google.auth</groupId>
         <artifactId>google-auth-library-oauth2-http</artifactId>
-        <version>0.20.0</version>
+        <version>0.21.0</version>
       </dependency>
     </dependencies>
   </dependencyManagement>
diff --git a/storage/json-api/pom.xml b/storage/json-api/pom.xml
index cff441cbec8..442a16a6e55 100644
--- a/storage/json-api/pom.xml
+++ b/storage/json-api/pom.xml
@@ -52,7 +52,7 @@
     <dependency>
       <groupId>com.google.auth</groupId>
       <artifactId>google-auth-library-oauth2-http</artifactId>
-      <version>0.20.0</version>
+      <version>0.21.0</version>
     </dependency>
     <dependency>
       <groupId>com.google.guava</groupId>
diff --git a/storage/storage-transfer/pom.xml b/storage/storage-transfer/pom.xml
index 42bf1ab7800..7ff3b44557b 100644
--- a/storage/storage-transfer/pom.xml
+++ b/storage/storage-transfer/pom.xml
@@ -54,7 +54,7 @@
     <dependency>
       <groupId>com.google.auth</groupId>
       <artifactId>google-auth-library-oauth2-http</artifactId>
-      <version>0.20.0</version>
+      <version>0.21.0</version>
     </dependency>
     <dependency>
       <groupId>com.google.guava</groupId>
diff --git a/storage/xml-api/cmdline-sample/pom.xml b/storage/xml-api/cmdline-sample/pom.xml
index 6a6d1518806..4292143b0b7 100644
--- a/storage/xml-api/cmdline-sample/pom.xml
+++ b/storage/xml-api/cmdline-sample/pom.xml
@@ -81,7 +81,7 @@
     <dependency>
       <groupId>com.google.auth</groupId>
       <artifactId>google-auth-library-oauth2-http</artifactId>
-      <version>0.20.0</version>
+      <version>0.21.0</version>
     </dependency>
     <dependency>
       <groupId>com.google.http-client</groupId>
diff --git a/vision/face-detection/pom.xml b/vision/face-detection/pom.xml
index 45e3baecefa..c5664cc7ddc 100644
--- a/vision/face-detection/pom.xml
+++ b/vision/face-detection/pom.xml
@@ -46,7 +46,7 @@
     <dependency>
       <groupId>com.google.auth</groupId>
       <artifactId>google-auth-library-oauth2-http</artifactId>
-      <version>0.20.0</version>
+      <version>0.21.0</version>
     </dependency>
     <dependency>
       <groupId>com.google.guava</groupId>