diff --git a/packages/contracts-bedrock/justfile b/packages/contracts-bedrock/justfile
index 08bbc114411be..6bc72727cd28f 100644
--- a/packages/contracts-bedrock/justfile
+++ b/packages/contracts-bedrock/justfile
@@ -91,7 +91,6 @@ prepare-upgrade-env *ARGS : build-go-ffi
   export FORK_RETRIES=10
   export FORK_BACKOFF=1000
   export FORK_TEST=true
-  export USE_MT_CANNON=true
   {{ARGS}} \
   --match-path "test/{L1,dispute,cannon}/**"