diff --git a/bootstrap/manifest.txt b/bootstrap/manifest.txt
index 2f698c020..b262b47aa 100644
--- a/bootstrap/manifest.txt
+++ b/bootstrap/manifest.txt
@@ -18,10 +18,10 @@
 $VerifiedPlatform windows-amd64 linux-amd64 mac-amd64
 
 @Subdir python
-infra/3pp/tools/cpython/${platform} version:2@2.7.18.chromium.36
+infra/3pp/tools/cpython/${platform} version:2@2.7.18.chromium.39
 
 @Subdir python3
-infra/3pp/tools/cpython3/${platform} version:2@3.8.10.chromium.17
+infra/3pp/tools/cpython3/${platform} version:2@3.8.10.chromium.19
 
 # TODO(https://crbug.com/1184766): Remove `=amd64` once mac/arm64 git exists
 @Subdir git