diff --git a/requirements.txt b/requirements.txt
index 0c32443a..c71e8c22 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -155,9 +155,9 @@ google-api-core[grpc]==2.26.0 \
     # via
     #   google-cloud-core
     #   google-cloud-spanner
-google-auth==2.41.1 \
-    --hash=sha256:754843be95575b9a19c604a848a41be03f7f2afd8c019f716dc1f51ee41c639d \
-    --hash=sha256:b76b7b1f9e61f0cb7e88870d14f6a94aeef248959ef6992670efee37709cbfd2
+google-auth==2.47.0 \
+    --hash=sha256:833229070a9dfee1a353ae9877dcd2dec069a8281a4e72e72f77d4a70ff945da \
+    --hash=sha256:c516d68336bfde7cf0da26aab674a36fedcf04b37ac4edd59c597178760c3498
     # via
     #   google-api-core
     #   google-cloud-core