diff --git a/ci/integration.sh b/ci/integration.sh
index 4d5498b6ec7..b1e8d0c8db1 100755
--- a/ci/integration.sh
+++ b/ci/integration.sh
@@ -15,7 +15,7 @@ set -ex
 # it again.
 #
 #which cargo-fmt || cargo install --force
-cargo install --path . --force 
+cargo install --path . --force --locked
 
 echo "Integration tests for: ${INTEGRATION}"
 cargo fmt -- --version