diff --git a/CHANGELOG.md b/CHANGELOG.md
index 351edeac..be3fb2ae 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+## Unreleased
+
+**Development**
+
+- Allow `build` 5.x and `package_config` 3.x in `flutter_gen_runner` while retaining support for `build` 4.x and `package_config` 2.2.x.
+
 ## 5.15.0
 
 **Feature**
diff --git a/packages/runner/pubspec.yaml b/packages/runner/pubspec.yaml
index 208fae23..18abbcb5 100644
--- a/packages/runner/pubspec.yaml
+++ b/packages/runner/pubspec.yaml
@@ -11,12 +11,12 @@ environment:
 
 dependencies:
   flutter_gen_core: 5.15.0
-  build: ^4.0.0
+  build: '>=4.0.0 <6.0.0'
   build_config: ^1.1.2
   collection: ^1.17.0
   crypto: ^3.0.0
   glob: ^2.0.0
-  package_config: ^2.1.0
+  package_config: '>=2.2.0 <4.0.0'
   path: ^1.8.0
   yaml: ^3.0.0