diff --git a/wsl-docker/README.md b/wsl-docker/README.md
index da14d82..ba50824 100644
--- a/wsl-docker/README.md
+++ b/wsl-docker/README.md
@@ -46,7 +46,7 @@ https://apps.microsoft.com/detail/9n0dx20hk701?hl=en-US&gl=US
 
 - Debian Bash:
     ```sh
-    sudo apt-get update && sudo apt-get install -y curl
+    sudo apt-get update && sudo apt-get install -y curl gpg
     curl -fsSL https://get.docker.com | sudo sh
     sudo adduser $USER docker # sudo 없이 docker 실행
     su $USER # group 변경은 로그인해야 적용되므로 자신에게 다시 로그인