diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index bef100f6051..73810214efb 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [ '3.10' ]
+        python-version: [ '3.11' ]
     steps:
     - uses: actions/checkout@v3
     - name: Filter changed file paths to outputs
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 3556ba8a33b..9e48722f899 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [ '3.10' ]
+        python-version: [ '3.11' ]
         tmux-version: [ '2.6', '2.7', '2.8', '3.0a', '3.1b', '3.2a', '3.3a', 'master' ]
         # balance ci coverage across supported python/tmux versions with CI speed
         include:
diff --git a/.python-version b/.python-version
index 946e73f1996..b6ec5ca979e 100644
--- a/.python-version
+++ b/.python-version
@@ -1 +1 @@
-3.10.7 3.9.13 3.8.13 3.7.13
+3.11.0 3.10.7 3.9.13 3.8.13 3.7.13
diff --git a/.tool-versions b/.tool-versions
index 4c9b42d1c2d..a0c5b80d4d7 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1,2 +1,2 @@
 poetry 1.2.1
-python 3.10.7 3.9.13 3.8.13 3.7.13
+python 3.11.0 3.10.7 3.9.13 3.8.13 3.7.13
diff --git a/CHANGES b/CHANGES
index 4e9a3b36da6..4f3c9506893 100644
--- a/CHANGES
+++ b/CHANGES
@@ -21,6 +21,10 @@ $ pipx install --suffix=@next 'tmuxp' --pip-args '\--pre' --force
 
 <!-- Maintainers, insert changes / features for the next release here -->
 
+### Development
+
+- Add python 3.11 to test grid, pyenv / asdf files (#842)
+
 ## tmuxp 1.17.2 (unreleased)
 
 ### Bug fix