diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index fabb5e6..86c8845 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -24,14 +24,14 @@ cargo_dependencies:
   image: reg.imvictor.tech/hub/rust:1.72.0-slim
   script:
     - mkdir -vp ${CARGO_HOME:-$HOME/.cargo}
-    - |
-cat << EOF | tee -a ${CARGO_HOME:-$HOME/.cargo}/config
-[source.crates-io]
-replace-with = 'mirror'
+    - >
+      cat << EOF | tee -a ${CARGO_HOME:-$HOME/.cargo}/config
+      [source.crates-io]
+      replace-with = 'mirror'
 
-[source.mirror]
-registry = "sparse+https://mirrors.tuna.tsinghua.edu.cn/crates.io-index/"
-EOF
+      [source.mirror]
+      registry = "sparse+https://mirrors.tuna.tsinghua.edu.cn/crates.io-index/"
+      EOF
     - cargo install cargo-make wasm-pack wasm-opt
     - cd ./axum-websockify
     - cargo fetch