diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 2c689d4b..a4810329 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -16,6 +16,7 @@ jobs:
           - "3.0"
           - "3.1"
           - "3.2"
+          - "3.3"
           - ruby-head
     runs-on: ubuntu-latest
     steps:
diff --git a/README.md b/README.md
index 54476b32..40a12c6d 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,7 @@ Committee is tested on the following MRI versions:
 - 3.0
 - 3.1
 - 3.2
+- 3.3
 
 ## Committee::Middleware::RequestValidation