diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 9af0a6d..c986991 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -1,7 +1,7 @@
 name: Lint
 on: [push, pull_request]
 env:
-  PYTHON_VERSION: 3.9
+  PYTHON_VERSION: 3.11
 
 jobs:
   lint:
diff --git a/.github/workflows/mypy.yml b/.github/workflows/mypy.yml
index 232d361..d133cca 100644
--- a/.github/workflows/mypy.yml
+++ b/.github/workflows/mypy.yml
@@ -1,7 +1,7 @@
 name: Mypy (Type check)
 on: [push, pull_request]
 env:
-  PYTHON_VERSION: 3.9
+  PYTHON_VERSION: 3.11
 
 jobs:
   mypy:
diff --git a/.github/workflows/test-build.yml b/.github/workflows/test-build.yml
index 0f8806c..f3e3b4a 100644
--- a/.github/workflows/test-build.yml
+++ b/.github/workflows/test-build.yml
@@ -15,7 +15,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9", "3.10", "3.11"]
+        python-version: ["3.10", "3.11"]
         module: [Core]
 
     # We want to run on external PRs, but not on our own internal PRs as they'll be run