diff --git a/dependencies.txt b/dependencies.txt
index a95dd0501c..8b503ce286 100644
--- a/dependencies.txt
+++ b/dependencies.txt
@@ -10,7 +10,7 @@
 # These dependencies are declared: https://github.com/googleapis/sdk-platform-java/blob/main/gapic-generator-java-pom-parent/pom.xml
 javax.annotation:javax.annotation-api,javax.annotation-api=1.3.2
 io.grpc:grpc-bom,grpc=1.78.0
-com.google.auth:google-auth-library-bom,google.auth=1.42.0
+com.google.auth:google-auth-library-bom,google.auth=1.42.1
 com.google.http-client:google-http-client,google.http-client=2.1.0
 com.google.code.gson:gson,gson=2.13.2
 com.google.guava:guava,guava=33.5.0-jre
diff --git a/gapic-generator-java-pom-parent/pom.xml b/gapic-generator-java-pom-parent/pom.xml
index ea79245e93..4d05a95687 100644
--- a/gapic-generator-java-pom-parent/pom.xml
+++ b/gapic-generator-java-pom-parent/pom.xml
@@ -28,7 +28,7 @@
         consistent across modules in this repository -->
     <javax.annotation-api.version>1.3.2</javax.annotation-api.version>
     <grpc.version>1.76.2</grpc.version>
-    <google.auth.version>1.41.0</google.auth.version>
+    <google.auth.version>1.42.1</google.auth.version>
     <google.http-client.version>2.1.0</google.http-client.version>
     <gson.version>2.12.1</gson.version>
     <guava.version>33.5.0-jre</guava.version>
diff --git a/gax-java/dependencies.properties b/gax-java/dependencies.properties
index 949aabd71f..d29f9c34a7 100644
--- a/gax-java/dependencies.properties
+++ b/gax-java/dependencies.properties
@@ -37,8 +37,8 @@ version.io_grpc=1.76.2
 #   2) Replace all characters which are neither alphabetic nor digits with the underscore ('_') character
 maven.com_google_api_grpc_proto_google_common_protos=com.google.api.grpc:proto-google-common-protos:2.63.2
 maven.com_google_api_grpc_grpc_google_common_protos=com.google.api.grpc:grpc-google-common-protos:2.63.2
-maven.com_google_auth_google_auth_library_oauth2_http=com.google.auth:google-auth-library-oauth2-http:1.41.0
-maven.com_google_auth_google_auth_library_credentials=com.google.auth:google-auth-library-credentials:1.41.0
+maven.com_google_auth_google_auth_library_oauth2_http=com.google.auth:google-auth-library-oauth2-http:1.42.1
+maven.com_google_auth_google_auth_library_credentials=com.google.auth:google-auth-library-credentials:1.42.1
 maven.io_opentelemetry_opentelemetry_api=io.opentelemetry:opentelemetry-api:1.47.0
 maven.io_opencensus_opencensus_api=io.opencensus:opencensus-api:0.31.1
 maven.io_opencensus_opencensus_contrib_grpc_metrics=io.opencensus:opencensus-contrib-grpc-metrics:0.31.1