diff --git a/.travis.yml b/.travis.yml
index 8d8dcf35..0b7e3e50 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -39,7 +39,7 @@ addons: &clang10
       - lld-10
     sources:
       - sourceline: "deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic-10 main"
-      - key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"
+        key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"
 
 
 matrix: