diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index c229f3dd..9f96ead8 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,24 +1,24 @@
 gcc-c++11:
   script: "CI/ci-linux.sh gcc C++11"
-  tags: 
-	- Linux
+  tags:
+    - Linux
 
 clang-c++11:
   script: "CI/ci-linux.sh clang C++11"
-  tags: 
-	- Linux
+  tags:
+    - Linux
 
 gcc-c++98:
   script: "CI/ci-linux.sh gcc C++98"
-  tags: 
-	- Linux
+  tags:
+    - Linux
 
 clang-c++98:
   script: "CI/ci-linux.sh clang C++98"
   tags: 
-	- Linux
+    - Linux
 
 macos:
   script: "CI/ci-mac.sh"
-  tags: 
-	- Apple
+  tags:
+    - Apple