diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 26e30abe..49a877ad 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -9,7 +9,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14", "pypy3.10"]
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14", "pypy3.11"]
         os: [ubuntu-latest, macos-latest, windows-latest]
 
     steps:
diff --git a/CHANGES b/CHANGES
index 8c7ea88d..1892a572 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,6 +1,22 @@
 Bleach changes
 ==============
 
+Version 6.4.0 (TBD)
+-------------------
+
+**Backwards incompatible changes**
+
+* Dropped support for pypy 3.10. (#764)
+
+**Security fixes**
+
+None
+
+**Bug fixes**
+
+* Add support for pypy 3.11. (#764)
+
+
 Version 6.3.0 (October 27th, 2025)
 ----------------------------------
 
diff --git a/tox.ini b/tox.ini
index 0d734b4a..600d70d9 100644
--- a/tox.ini
+++ b/tox.ini
@@ -17,7 +17,7 @@ python =
     3.12: py312
     3.13: py313
     3.14: py314
-    pypy-3.10: pypy3
+    pypy-3.11: pypy3
 
 [testenv]
 deps = -rrequirements-dev.txt