diff --git a/google/cloud/aiplatform/initializer.py b/google/cloud/aiplatform/initializer.py
index d9d360d1bb..64f9c13c20 100644
--- a/google/cloud/aiplatform/initializer.py
+++ b/google/cloud/aiplatform/initializer.py
@@ -718,7 +718,7 @@ def _set_async_rest_credentials(credentials: AsyncCredentials):
             + "google-auth >= 2.35.0.\n\n"
             + "Install the following dependencies:\n"
             + "pip install google-api-core[grpc, async_rest] >= 2.21.0\n"
-            + "pip install google-auth[aiohttp] >= 2.47.0\n\n"
+            + "pip install google-auth[aiohttp] >= 2.53.0\n\n"
             + "Example usage:\n"
             + "from google.auth.aio.credentials import StaticCredentials\n"
             + "async_credentials = StaticCredentials(token=YOUR_TOKEN_HERE)\n"
diff --git a/setup.py b/setup.py
index 65be53bae9..949458443d 100644
--- a/setup.py
+++ b/setup.py
@@ -318,7 +318,7 @@
             "google-api-core[grpc] >= 1.34.1,"
             " <3.0.0,!=2.0.*,!=2.1.*,!=2.2.*,!=2.3.*,!=2.4.*,!=2.5.*,!=2.6.*,!=2.7.*"
         ),
-        "google-auth >= 2.47.0, <3.0.0",
+        "google-auth >= 2.53.0, <3.0.0",
         "proto-plus >= 1.22.3, <2.0.0",
         "protobuf>=3.20.2,<7.0.0,!=4.21.0,!=4.21.1,!=4.21.2,!=4.21.3,!=4.21.4,!=4.21.5",
         "packaging >= 14.3",
diff --git a/testing/constraints-3.10.txt b/testing/constraints-3.10.txt
index bae8a3dbaf..62e8ed3896 100644
--- a/testing/constraints-3.10.txt
+++ b/testing/constraints-3.10.txt
@@ -2,7 +2,7 @@
 # This constraints file is required for unit tests.
 # List all library dependencies and extras in this file.
 google-api-core==2.21.0 # Tests google-api-core with rest async support
-google-auth==2.49.0
+google-auth==2.53.0
 proto-plus==1.22.3
 protobuf
 mock==4.0.2
diff --git a/testing/constraints-3.11.txt b/testing/constraints-3.11.txt
index e7110ef6bb..69e58fdfcf 100644
--- a/testing/constraints-3.11.txt
+++ b/testing/constraints-3.11.txt
@@ -2,7 +2,7 @@
 # This constraints file is required for unit tests.
 # List all library dependencies and extras in this file.
 google-api-core==2.21.0 # Tests google-api-core with rest async support
-google-auth==2.49.0
+google-auth==2.53.0
 proto-plus
 protobuf
 mock==4.0.2
diff --git a/testing/constraints-3.12.txt b/testing/constraints-3.12.txt
index b35278dc6e..53a0f89398 100644
--- a/testing/constraints-3.12.txt
+++ b/testing/constraints-3.12.txt
@@ -2,7 +2,7 @@
 # This constraints file is required for unit tests.
 # List all library dependencies and extras in this file.
 google-api-core==2.21.0 # Tests google-api-core with rest async support
-google-auth==2.49.0
+google-auth==2.53.0
 proto-plus
 mock==4.0.2
 google-cloud-storage==3.0.0 # Updated to v3.x, backward compatible with v2.x via wrapper
diff --git a/testing/constraints-3.13.txt b/testing/constraints-3.13.txt
index 09308e2cbb..6032c5ac2d 100644
--- a/testing/constraints-3.13.txt
+++ b/testing/constraints-3.13.txt
@@ -2,7 +2,7 @@
 # This constraints file is required for unit tests.
 # List all library dependencies and extras in this file.
 google-api-core==2.27.0 # Tests google-api-core with rest async support
-google-auth==2.49.0
+google-auth==2.53.0
 proto-plus
 mock==4.0.2
 google-cloud-storage==3.10.0 # Updated to v3.x, backward compatible with v2.x via wrapper
diff --git a/testing/constraints-3.14.txt b/testing/constraints-3.14.txt
index 66f1c92acc..1b7b59fe95 100644
--- a/testing/constraints-3.14.txt
+++ b/testing/constraints-3.14.txt
@@ -2,7 +2,7 @@
 # This constraints file is required for unit tests.
 # List all library dependencies and extras in this file.
 google-api-core==2.27.0
-google-auth==2.49.0
+google-auth==2.53.0
 proto-plus
 mock==4.0.2
 google-cloud-storage==3.10.0 # Updated for Python 3.14 compatibility
diff --git a/testing/constraints-3.9.txt b/testing/constraints-3.9.txt
index 63f2d6d147..29ffe3aa60 100644
--- a/testing/constraints-3.9.txt
+++ b/testing/constraints-3.9.txt
@@ -2,7 +2,7 @@
 # This constraints file is required for unit tests.
 # List all library dependencies and extras in this file.
 google-api-core==2.21.0 # Tests google-api-core with rest async support
-google-auth==2.47.0 # Tests google-auth with rest async support
+google-auth==2.53.0 # Tests google-auth with rest async support
 proto-plus==1.22.3
 protobuf
 mock==4.0.2