diff --git a/pubspec.yaml b/pubspec.yaml
index e6bc1d21f..44f20ef16 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -16,12 +16,12 @@ dependencies:
   logging: ^1.0.0
   meta: ^1.6.0
   path: ^1.5.1
-  react: ^6.3.0
+  react: '>=6.3.0 <8.0.0'
   redux: '>=3.0.0 <6.0.0'
   source_span: ^1.4.1
   transformer_utils: ^0.2.6
   w_common: ^3.0.0
-  w_flux: ^2.10.21
+  w_flux: '>=2.10.21 <4.0.0'
   platform_detect: '>=1.3.4 <3.0.0'
   quiver: ">=0.25.0 <4.0.0"
   redux_dev_tools: '>=0.4.0 <0.8.0'