diff --git a/.github/workflows/test_branches.yml b/.github/workflows/test_branches.yml
index 68e1313b505..7dc2a7e4059 100644
--- a/.github/workflows/test_branches.yml
+++ b/.github/workflows/test_branches.yml
@@ -23,7 +23,7 @@ env:
   PYTHON_CORE_PKGS: wheel
   PYPI_ONLY: z3-solver linear-tree
   PYPY_EXCLUDE: scipy numdifftools seaborn statsmodels linear-tree
-  CACHE_VER: v250820.0
+  CACHE_VER: v250827.0
   NEOS_EMAIL: tests@pyomo.org
   SRC_REF: ${{ github.head_ref || github.ref }}
   PYOMO_WORKFLOW: branch
diff --git a/.github/workflows/test_pr_and_main.yml b/.github/workflows/test_pr_and_main.yml
index 76a301c4e4b..34f4e27a62d 100644
--- a/.github/workflows/test_pr_and_main.yml
+++ b/.github/workflows/test_pr_and_main.yml
@@ -31,7 +31,7 @@ env:
   PYTHON_CORE_PKGS: wheel
   PYPI_ONLY: z3-solver linear-tree
   PYPY_EXCLUDE: scipy numdifftools seaborn statsmodels linear-tree
-  CACHE_VER: v250820.0
+  CACHE_VER: v250827.0
   NEOS_EMAIL: tests@pyomo.org
   SRC_REF: ${{ github.head_ref || github.ref }}
   PYOMO_WORKFLOW: |
diff --git a/pyomo/version/info.py b/pyomo/version/info.py
index 91c99e66fb7..38781e1d47a 100644
--- a/pyomo/version/info.py
+++ b/pyomo/version/info.py
@@ -26,9 +26,9 @@
 # main and needs a hard reference to "suitably new" development.
 major = 6
 minor = 9
-micro = 4
-# releaselevel = 'invalid'
-releaselevel = 'final'
+micro = 5
+releaselevel = 'invalid'
+# releaselevel = 'final'
 serial = 0
 
 if releaselevel == 'final':