diff --git a/kms/attestations/requirements.txt b/kms/attestations/requirements.txt
index 21fdd0e1147..12decf81590 100644
--- a/kms/attestations/requirements.txt
+++ b/kms/attestations/requirements.txt
@@ -1,4 +1,4 @@
 cryptography==45.0.1
-pem==21.2.0; python_version < '3.8'
+pem==23.1.0; python_version < '3.8'
 pem==23.1.0; python_version > '3.7'
 requests==2.31.0