diff --git a/.trampolinerc b/.trampolinerc
index 303c25a30fab..e93e5a3778cd 100644
--- a/.trampolinerc
+++ b/.trampolinerc
@@ -23,7 +23,6 @@ pass_down_envvars+=(
     "EXTRA_CI_ARGS"
     "INFO_URL"
     "KOKORO_GIT_COMMIT"
-    "KOKORO_KEYSTORE_DIR"
     "LIBRARIES_VERSIONS"
     "RELEASE_DRY_RUN"
     "RELEASE_PACKAGE"