diff --git a/WORKSPACE.bazel b/WORKSPACE.bazel
index 0b5c0d0bc3634..baec139453143 100644
--- a/WORKSPACE.bazel
+++ b/WORKSPACE.bazel
@@ -57,7 +57,11 @@ yarn_install(
   quiet = False,
   frozen_lockfile = False,
   environment = {
+    "GECKODRIVER_CDNURL": "https://us-central1-elastic-kibana-184716.cloudfunctions.net/kibana-ci-proxy-cache",
+    "CHROMEDRIVER_CDNURL": "https://us-central1-elastic-kibana-184716.cloudfunctions.net/kibana-ci-proxy-cache",
+    "CHROMEDRIVER_CDNBINARIESURL": "https://us-central1-elastic-kibana-184716.cloudfunctions.net/kibana-ci-proxy-cache",
     "SASS_BINARY_SITE": "https://us-central1-elastic-kibana-184716.cloudfunctions.net/kibana-ci-proxy-cache/node-sass",
     "RE2_DOWNLOAD_MIRROR": "https://us-central1-elastic-kibana-184716.cloudfunctions.net/kibana-ci-proxy-cache/node-re2",
+    "CYPRESS_DOWNLOAD_MIRROR": "https://us-central1-elastic-kibana-184716.cloudfunctions.net/kibana-ci-proxy-cache/cypress",
   }
 )
diff --git a/src/dev/ci_setup/setup_env.sh b/src/dev/ci_setup/setup_env.sh
index 2bcf3775183e5..c1942775c88b5 100644
--- a/src/dev/ci_setup/setup_env.sh
+++ b/src/dev/ci_setup/setup_env.sh
@@ -128,10 +128,10 @@ export PATH="$PATH:$yarnGlobalDir"
 
 # use a proxy to fetch chromedriver/geckodriver asset
 export GECKODRIVER_CDNURL="https://us-central1-elastic-kibana-184716.cloudfunctions.net/kibana-ci-proxy-cache"
-export CHROMEDRIVER_LEGACY_CDNURL="https://us-central1-elastic-kibana-184716.cloudfunctions.net/kibana-ci-proxy-cache"
 export CHROMEDRIVER_CDNURL="https://us-central1-elastic-kibana-184716.cloudfunctions.net/kibana-ci-proxy-cache"
 export CHROMEDRIVER_CDNBINARIESURL="https://us-central1-elastic-kibana-184716.cloudfunctions.net/kibana-ci-proxy-cache"
 export RE2_DOWNLOAD_MIRROR="https://us-central1-elastic-kibana-184716.cloudfunctions.net/kibana-ci-proxy-cache"
+export SASS_BINARY_SITE="https://us-central1-elastic-kibana-184716.cloudfunctions.net/kibana-ci-proxy-cache/node-sass"
 export CYPRESS_DOWNLOAD_MIRROR="https://us-central1-elastic-kibana-184716.cloudfunctions.net/kibana-ci-proxy-cache/cypress"
 
 export CHECKS_REPORTER_ACTIVE=false