diff --git a/ci/run-experimental-x64-ci.sh b/ci/run-experimental-x64-ci.sh
index edadba2b9c..a7e650b130 100755
--- a/ci/run-experimental-x64-ci.sh
+++ b/ci/run-experimental-x64-ci.sh
@@ -6,6 +6,7 @@
 CARGO_VERSION=${CARGO_VERSION:-"+nightly"}
 
 cargo $CARGO_VERSION \
+            --locked \
             -Zfeatures=all -Zpackage-features \
             test \
             --features test-programs/test_programs \