diff --git a/docker/freshrss/docker-compose.yaml b/docker/freshrss/docker-compose.yaml
index 86862668..d04da176 100644
--- a/docker/freshrss/docker-compose.yaml
+++ b/docker/freshrss/docker-compose.yaml
@@ -1,4 +1,3 @@
-version: "2.1"
 services:
   freshrss:
     image: linuxserver/freshrss
diff --git a/docker/gitea/docker-compose.yaml b/docker/gitea/docker-compose.yaml
index 0b8b0bb5..0a3a3b5a 100644
--- a/docker/gitea/docker-compose.yaml
+++ b/docker/gitea/docker-compose.yaml
@@ -1,5 +1,3 @@
-version: "2"
-
 services:
   gitea:
     container_name: gitea
diff --git a/docker/homeautomation/docker-compose.yaml b/docker/homeautomation/docker-compose.yaml
index 0cf097e9..76f354a0 100644
--- a/docker/homeautomation/docker-compose.yaml
+++ b/docker/homeautomation/docker-compose.yaml
@@ -1,4 +1,3 @@
-version: "3"
 services:
   home-assistant:
     container_name: home-assistant
diff --git a/docker/index.korhonen.cc/docker-compose.yaml b/docker/index.korhonen.cc/docker-compose.yaml
index 2859a129..78fba3ef 100644
--- a/docker/index.korhonen.cc/docker-compose.yaml
+++ b/docker/index.korhonen.cc/docker-compose.yaml
@@ -1,5 +1,3 @@
-version: "3"
-
 services:
   nginx:
     image: fraoustin/fancyindex
diff --git a/docker/jellyfin/docker-compose.yaml b/docker/jellyfin/docker-compose.yaml
index 8ead67ef..655a622b 100644
--- a/docker/jellyfin/docker-compose.yaml
+++ b/docker/jellyfin/docker-compose.yaml
@@ -1,4 +1,3 @@
-version: "2.3"
 services:
   jellyfin:
     image: jellyfin/jellyfin
diff --git a/docker/mumble/docker-compose.yaml b/docker/mumble/docker-compose.yaml
index aaebe2e1..570697e5 100644
--- a/docker/mumble/docker-compose.yaml
+++ b/docker/mumble/docker-compose.yaml
@@ -1,5 +1,3 @@
-version: "3"
-
 services:
   mumble:
     container_name: mumble
diff --git a/docker/nextcloud/docker-compose.yaml b/docker/nextcloud/docker-compose.yaml
index d959a14a..ef28ba66 100644
--- a/docker/nextcloud/docker-compose.yaml
+++ b/docker/nextcloud/docker-compose.yaml
@@ -1,5 +1,3 @@
-version: "3"
-
 services:
   nextcloud:
     image: nextcloud:apache
diff --git a/docker/pihole/docker-compose.yaml b/docker/pihole/docker-compose.yaml
index 65ca2f52..489ee62e 100644
--- a/docker/pihole/docker-compose.yaml
+++ b/docker/pihole/docker-compose.yaml
@@ -1,5 +1,3 @@
-version: "3"
-
 services:
   pihole:
     container_name: pihole
diff --git a/docker/postgres/docker-compose.yaml b/docker/postgres/docker-compose.yaml
index 92942046..4355ba96 100644
--- a/docker/postgres/docker-compose.yaml
+++ b/docker/postgres/docker-compose.yaml
@@ -1,4 +1,3 @@
-version: "3"
 services:
   postgres:
     container_name: postgres
diff --git a/docker/tftp/docker-compose.yaml b/docker/tftp/docker-compose.yaml
index 1ce83b1c..47d6d3c0 100644
--- a/docker/tftp/docker-compose.yaml
+++ b/docker/tftp/docker-compose.yaml
@@ -1,5 +1,3 @@
-version: "2"
-
 services:
   tftp:
     container_name: tftp
diff --git a/docker/traefik/docker-compose.yaml b/docker/traefik/docker-compose.yaml
index ca5657ca..db649156 100644
--- a/docker/traefik/docker-compose.yaml
+++ b/docker/traefik/docker-compose.yaml
@@ -1,5 +1,3 @@
-version: '3'
-
 services:
   traefik:
     image: traefik:latest
diff --git a/docker/tvheadend/docker-compose.yaml b/docker/tvheadend/docker-compose.yaml
index 667fec7c..1e9a93dd 100644
--- a/docker/tvheadend/docker-compose.yaml
+++ b/docker/tvheadend/docker-compose.yaml
@@ -1,4 +1,3 @@
-version: "2"
 services:
   tvheadend:
     image: linuxserver/tvheadend
diff --git a/docker/wireguard/docker-compose.yaml b/docker/wireguard/docker-compose.yaml
index 41769138..0d3296de 100644
--- a/docker/wireguard/docker-compose.yaml
+++ b/docker/wireguard/docker-compose.yaml
@@ -1,4 +1,3 @@
-version: "2.1"
 services:
   wireguard:
     image: linuxserver/wireguard