diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 5302e2f..af80774 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -13,7 +13,7 @@ jobs:
       fail-fast: false
       matrix:
         activesupport: ['7.1', '7.2', '8.0']
-        json_schemer: ['2.1', '2.2', '2.3']
+        json_schemer: ['2.1', '2.2', '2.3', '2.4']
         ruby: ['3.2', '3.3', '3.4']
     env:
       ACTIVESUPPORT: '${{ matrix.activesupport }}'
diff --git a/openapi_contracts.gemspec b/openapi_contracts.gemspec
index 111f483..e6dca38 100644
--- a/openapi_contracts.gemspec
+++ b/openapi_contracts.gemspec
@@ -14,7 +14,7 @@ Gem::Specification.new do |s|
   s.files = Dir['lib/**/*', 'README.md']
 
   s.add_dependency 'activesupport', '>= 6.1', '< 8.1'
-  s.add_dependency 'json_schemer', '>= 2.1', '< 2.4'
+  s.add_dependency 'json_schemer', '>= 2.1', '< 2.5'
   s.add_dependency 'openapi_parameters', '>= 0.3.3', '< 0.4'
   s.add_dependency 'rack', '>= 2.0.0'