diff --git a/packages/monarch/CHANGELOG.md b/packages/monarch/CHANGELOG.md
index b99859e..decd321 100644
--- a/packages/monarch/CHANGELOG.md
+++ b/packages/monarch/CHANGELOG.md
@@ -1,3 +1,6 @@
+### 3.9.4
+- Sets build_runner dependency to `>=2.1.11 <=2.4.15`.
+
 ### 3.9.3
 - Upgrades vm_service dependency to `>=9.4.0 <16.0.0`.
 
diff --git a/packages/monarch/pubspec.yaml b/packages/monarch/pubspec.yaml
index 9c23c99..d0535a3 100644
--- a/packages/monarch/pubspec.yaml
+++ b/packages/monarch/pubspec.yaml
@@ -1,6 +1,6 @@
 name: monarch
 description: Code generator for Monarch. Monarch is a tool for building Flutter widgets in isolation. It makes it easy to build, test and debug complex UIs.
-version: 3.9.3
+version: 3.9.4
 homepage: https://monarchapp.io
 repository: https://github.com/Dropsource/monarch
 issue_tracker: https://github.com/Dropsource/monarch/issues
@@ -31,6 +31,7 @@ dependencies:
   flutter_localizations:
     sdk: flutter
   build: ^2.0.0
+  build_runner: '>=2.1.11 <=2.4.15'
   source_gen: ^2.0.0
   dart_style: ^3.0.1
   monarch_definitions: ^1.7.0