diff --git a/Gemfile b/Gemfile
index 7a46c1dc..775e2140 100644
--- a/Gemfile
+++ b/Gemfile
@@ -6,7 +6,7 @@ git_source(:github) { |name| "https://github.com/#{name}.git" }
 
 gem 'rails', '~> 7.0.x'
 
-gem 'activerecord-nulldb-adapter'
+gem 'activerecord-nulldb-adapter', github: 'puzzle/nulldb'
 gem 'pg'
 
 gem 'nochmal', github: 'puzzle/nochmal'
diff --git a/Gemfile.lock b/Gemfile.lock
index 9f7a7dba..858f936b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -6,6 +6,13 @@ GIT
       pastel
       rails (>= 6.0)
 
+GIT
+  remote: https://github.com/puzzle/nulldb.git
+  revision: 06088c94b496f3ecd6017c759bc0b2353b50e89a
+  specs:
+    activerecord-nulldb-adapter (1.0.1)
+      activerecord (>= 5.2.0, < 7.2)
+
 GEM
   remote: https://rubygems.org/
   specs:
@@ -71,8 +78,6 @@ GEM
       activemodel (= 7.1.3)
       activesupport (= 7.1.3)
       timeout (>= 0.4.0)
-    activerecord-nulldb-adapter (1.0.1)
-      activerecord (>= 5.2.0, < 7.2)
     activeresource (6.0.0)
       activemodel (>= 6.0)
       activemodel-serializers-xml (~> 1.0)
@@ -691,7 +696,7 @@ PLATFORMS
   x86_64-linux
 
 DEPENDENCIES
-  activerecord-nulldb-adapter
+  activerecord-nulldb-adapter!
   acts_as_tree
   airbrake
   annotate