diff --git a/.github/workflows/mockito.yaml b/.github/workflows/mockito.yaml
index 475b7cee9..8921863d7 100644
--- a/.github/workflows/mockito.yaml
+++ b/.github/workflows/mockito.yaml
@@ -33,7 +33,7 @@ jobs:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332
       - uses: dart-lang/setup-dart@0a8a0fc875eb934c15d08629302413c671d3f672
         with:
-          sdk: 3.6.0
+          sdk: 3.5.4
       - id: install
         name: Install dependencies
         run: dart pub get
@@ -46,7 +46,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        sdk: [3.6.0, dev]
+        sdk: [3.5.4, dev]
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332
       - uses: dart-lang/setup-dart@0a8a0fc875eb934c15d08629302413c671d3f672
@@ -68,7 +68,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        sdk: [3.6.0, dev]
+        sdk: [3.5.4, dev]
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332
       - uses: dart-lang/setup-dart@0a8a0fc875eb934c15d08629302413c671d3f672
diff --git a/pkgs/mockito/pubspec.yaml b/pkgs/mockito/pubspec.yaml
index 8ad62eefc..c83f830f5 100644
--- a/pkgs/mockito/pubspec.yaml
+++ b/pkgs/mockito/pubspec.yaml
@@ -10,7 +10,7 @@ topics:
  - mocking
 
 environment:
-  sdk: ^3.6.0
+  sdk: ^3.5.4
 
 dependencies:
   analyzer: '>=6.9.0 <7.0.0'