diff --git a/pkgs/wal-e/requirements_frozen.txt b/pkgs/wal-e/requirements_frozen.txt
index 972fda3..12dbfe2 100644
--- a/pkgs/wal-e/requirements_frozen.txt
+++ b/pkgs/wal-e/requirements_frozen.txt
@@ -111,7 +111,7 @@ oslo.i18n==3.21.0
 oslo.serialization==2.27.0
 oslo.utils==3.36.4
 pbr==4.2.0
-protobuf==3.6.1
+protobuf==3.15.0
 pyasn1==0.4.4
 pyasn1-modules==0.2.2
 pycparser==2.18