Allow analyzer 9. (#836)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4bb43c3..ea356ac 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 5.6.1
+
+* Allow `analyzer: >=8.1.0 <10.0.0`.
+
 ## 5.6.0
 
 * Add dummy values for `RegExp` and `MapEntry`.
diff --git a/pubspec.yaml b/pubspec.yaml
index 3e9c62d..f0031e1 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: mockito
-version: 5.6.0
+version: 5.6.1
 description: >-
   A mock framework inspired by Mockito with APIs for Fakes, Mocks,
   behavior verification, and stubbing.
@@ -13,7 +13,7 @@
   sdk: ^3.7.0
 
 dependencies:
-  analyzer: ^8.1.1
+  analyzer: '>=8.1.1 <10.0.0'
   build: '>=3.0.0 <5.0.0'
   code_builder: ^4.5.0
   collection: ^1.19.0