diff --git a/docker-compose-slim.yml b/docker-compose-slim.yml
index 2a01296..3bd4f46 100644
--- a/docker-compose-slim.yml
+++ b/docker-compose-slim.yml
@@ -1,4 +1,3 @@
-version: "3"
 # this file uses prebuilt image in dockerhub
 services:
   jekyll:
diff --git a/docker-compose.yml b/docker-compose.yml
index 26b8d84..a9bc8b8 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,4 +1,3 @@
-version: "3"
 # this file uses prebuilt image in dockerhub
 services:
   jekyll: