diff --git a/packages/btleplug/pubspec.yaml b/packages/btleplug/pubspec.yaml
index 7aab1c8..393cad9 100644
--- a/packages/btleplug/pubspec.yaml
+++ b/packages/btleplug/pubspec.yaml
@@ -12,7 +12,7 @@ environment:
 
 dev_dependencies:
   build_runner: ^2.4.6
-  ffigen: ^8.0.2
+  ffigen: ">=8.0.2 <12.0.0"
   freezed: ^2.4.5
   lints: ^2.0.0
   test: ^1.21.0