diff --git a/tools/run_tests/sanity/check_submodules.sh b/tools/run_tests/sanity/check_submodules.sh
index c5a0dbbef324133809782998d5580dec6ed95309..0a9c1cc046cdb70ca0d7113c774b00186e684b53 100755
--- a/tools/run_tests/sanity/check_submodules.sh
+++ b/tools/run_tests/sanity/check_submodules.sh
@@ -48,7 +48,7 @@ cat << EOF | awk '{ print $1 }' | sort > $want_submodules
  ec44c6c1675c25b9827aacd08c02433cccde7780 third_party/googletest (release-1.8.0)
  593e917c176b5bc5aafa57bf9f6030d749d91cd5 third_party/protobuf (v3.1.0-alpha-1-326-g593e917)
  bcad91771b7f0bff28a1cac1981d7ef2b9bcef3c third_party/thrift (bcad917)
- 50893291621658f355bc5b4d450a8d06a563053d third_party/zlib (v1.2.8)
+ cacf7f1d4e3d44d871b605da3b647f07d718623f third_party/zlib (v1.2.11)
  7691f773af79bf75a62d1863fd0f13ebf9dc51b1 third_party/cares/cares (1.12.0)
 EOF