diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 3164e9e..ae2bf42 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -42,6 +42,7 @@ jobs:
           - "pypy3.8"
           - "pypy3.9"
           - "pypy3.10"
+          - "pypy3.11"
 
           # Old PyPy versions
           # See https://foss.heptapod.net/pypy/pypy/-/issues/3991
diff --git a/runtests.py b/runtests.py
index 2e92dba..c858516 100755
--- a/runtests.py
+++ b/runtests.py
@@ -52,6 +52,7 @@
     "pypy3.8",
     "pypy3.9",
     "pypy3.10",
+    "pypy3.11",
 )