diff --git a/.github/workflows/windows-build.yml b/.github/workflows/windows-build.yml
index 05e01364..80965e54 100644
--- a/.github/workflows/windows-build.yml
+++ b/.github/workflows/windows-build.yml
@@ -19,7 +19,7 @@ jobs:
       - uses: actions/checkout@v2.4.0
       - uses: actions/setup-python@v2.2.2
         with:
-          python-version: "3.9.7"
+          python-version: "3.9.8"
           architecture: "x86"
 
       - name: Install python tools
diff --git a/.python-version b/.python-version
index f69abe41..26cb4859 100644
--- a/.python-version
+++ b/.python-version
@@ -1 +1 @@
-3.9.7
+3.9.8
diff --git a/ChangeLog.md b/ChangeLog.md
index 7c2b8ad3..38eebba3 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -9,7 +9,7 @@ produce the Windows executables and installer.
 
 ---
 
-* We now test against, and package with, Python 3.9.7.
+* We now test against, and package with, Python 3.9.8.
 
   **As a consequence of this we no longer support Windows 7.  
   This is due to
@@ -27,6 +27,12 @@ produce the Windows executables and installer.
 
 ---
 
+Developers
+---
+
+* Now built using Python 3.9.8.
+
+
 Release 5.2.1
 ===