diff --git a/.circleci/config.yml b/.circleci/config.yml
index f7bedfd..d52faf9 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -18,7 +18,7 @@ jobs:
             git submodule update --init --recursive
       # Use cached mlir installation if possible.
       - restore_cache:
-          key: V7-LLVM-PROJECT-{{ arch }}
+          key: V8-LLVM-PROJECT-{{ arch }}
       - run:
           name: Install MLIR
           command: |
@@ -29,7 +29,7 @@ jobs:
               source ONNF/utils/install-mlir.sh
             fi
       - save_cache:
-          key: V7-LLVM-PROJECT-{{ arch }}
+          key: V8-LLVM-PROJECT-{{ arch }}
           paths:
             - llvm-project
       - run: