diff --git a/tools/internal_ci/helper_scripts/requirements.linux_perf.txt b/tools/internal_ci/helper_scripts/requirements.linux_perf.txt
index 92d92e55e5f..761d8ebfcd1 100644
--- a/tools/internal_ci/helper_scripts/requirements.linux_perf.txt
+++ b/tools/internal_ci/helper_scripts/requirements.linux_perf.txt
@@ -1,4 +1,4 @@
-cryptography==42.0.4
+cryptography==3.4.6
 PyJWT==2.0.1
 requests==2.25.1
 scipy==1.5.4
diff --git a/tools/internal_ci/helper_scripts/requirements.macos.txt b/tools/internal_ci/helper_scripts/requirements.macos.txt
index 475bf2e6744..8f8d1d2141c 100644
--- a/tools/internal_ci/helper_scripts/requirements.macos.txt
+++ b/tools/internal_ci/helper_scripts/requirements.macos.txt
@@ -1,5 +1,5 @@
 cython<3.0.0rc1
-cryptography==42.0.4
+cryptography==3.4.6
 PyJWT==2.0.1
 pyOpenSSL==20.0.1
 PyYAML==6.0