diff --git a/docker-compose.yml b/docker-compose.yml
index 61deb51ab6..0ec0c43bb6 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -59,7 +59,7 @@ services:
   web:
     # You can uncomment the following line if you want to not use the prebuilt image, for example if you have local code changes
     build: .
-    image: kmyblue:17.0-dev
+    image: kmyblue:18.0-dev
     restart: always
     env_file: .env.production
     command: bundle exec puma -C config/puma.rb
@@ -83,7 +83,7 @@ services:
     build:
       dockerfile: ./streaming/Dockerfile
       context: .
-    image: kmyblue-streaming:17.0-dev
+    image: kmyblue-streaming:18.0-dev
     restart: always
     env_file: .env.production
     command: node ./streaming/index.js
@@ -101,7 +101,7 @@ services:
 
   sidekiq:
     build: .
-    image: kmyblue:17.0-dev
+    image: kmyblue:18.0-dev
     restart: always
     env_file: .env.production
     command: bundle exec sidekiq
diff --git a/lib/mastodon/version.rb b/lib/mastodon/version.rb
index f09f32ab30..bc644a6112 100644
--- a/lib/mastodon/version.rb
+++ b/lib/mastodon/version.rb
@@ -9,7 +9,7 @@ module Mastodon
     # If you change the version number, also change the image version in docker-compose.yml.
 
     def kmyblue_major
-      17
+      18
     end
 
     def kmyblue_minor