diff --git a/.circleci/config.yml b/.circleci/config.yml
index 093a42bdd2..b951b0f2b3 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -190,7 +190,7 @@ var_14: &notify_dev_infra_on_fail
 
 # Cache key for the Material unit tests job. **Note** when updating the SHA in the cache keys,
 # also update the SHA for the "MATERIAL_REPO_COMMIT" environment variable.
-var_15: &material_unit_tests_cache_key v4-angular-material-097f4335a4e0b6e6b579829ae3a9cffce6292d2b
+var_15: &material_unit_tests_cache_key v4-angular-material-18b9ef3f5529f0fa8f034944681486447af7b879
 var_16: &material_unit_tests_cache_key_short v4-angular-material
 
 version: 2
diff --git a/.circleci/env.sh b/.circleci/env.sh
index 0a07fb192c..82ef09082d 100755
--- a/.circleci/env.sh
+++ b/.circleci/env.sh
@@ -80,7 +80,7 @@ setPublicVar MATERIAL_REPO_TMP_DIR "/tmp/material2"
 setPublicVar MATERIAL_REPO_URL "https://github.com/angular/material2.git"
 setPublicVar MATERIAL_REPO_BRANCH "master"
 # **NOTE**: When updating the commit SHA, also update the cache key in the CircleCI "config.yml".
-setPublicVar MATERIAL_REPO_COMMIT "eaf70ca2a0600757041633976b29ab5a95d08296"
+setPublicVar MATERIAL_REPO_COMMIT "18b9ef3f5529f0fa8f034944681486447af7b879"
 
 # Source `$BASH_ENV` to make the variables available immediately.
 source $BASH_ENV;