diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 821c6ca..c78fb71 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -3,7 +3,7 @@ stages:
 
 freeze:envelope-byte-contract:
   stage: test
-  image: rust:stable
+  image: rust:1
   variables:
     CARGO_TERM_COLOR: always
   cache:
@@ -17,4 +17,3 @@ freeze:envelope-byte-contract:
     - cargo --version
   script:
     - cargo test -p vaultmesh-command-center test_event_envelope_canonicalization_bytes
-