diff --git a/test/test_fixtures/over_react_project/pubspec.yaml b/test/test_fixtures/over_react_project/pubspec.yaml
index f5301606..594730d3 100644
--- a/test/test_fixtures/over_react_project/pubspec.yaml
+++ b/test/test_fixtures/over_react_project/pubspec.yaml
@@ -2,4 +2,4 @@ name: over_react_project
 environment:
   sdk: '>=2.11.0 <3.0.0'
 dependencies:
-  over_react: ^4.2.0
+  over_react: '>=4.2.0 <6.0.0'
diff --git a/test/test_fixtures/rmui_project/pubspec.yaml b/test/test_fixtures/rmui_project/pubspec.yaml
index 761c78b3..e63a1b1d 100644
--- a/test/test_fixtures/rmui_project/pubspec.yaml
+++ b/test/test_fixtures/rmui_project/pubspec.yaml
@@ -2,7 +2,7 @@ name: rmui_project
 environment:
   sdk: '>=2.11.0 <3.0.0'
 dependencies:
-  over_react: ^4.2.0
+  over_react: '>=4.2.0 <6.0.0'
   react_material_ui:
     hosted:
       name: react_material_ui
diff --git a/test/test_fixtures/wsd_project/pubspec.yaml b/test/test_fixtures/wsd_project/pubspec.yaml
index bd483fad..a4cf544e 100644
--- a/test/test_fixtures/wsd_project/pubspec.yaml
+++ b/test/test_fixtures/wsd_project/pubspec.yaml
@@ -2,7 +2,7 @@ name: wsd_project
 environment:
   sdk: '>=2.11.0 <3.0.0'
 dependencies:
-  over_react: ^4.2.0
+  over_react: '>=4.2.0 <6.0.0'
   web_skin_dart:
     hosted:
       name: web_skin_dart