diff --git a/Misc/NEWS.d/next/Windows/2024-02-01-14-35-05.gh-issue-111239.SO7SUF.rst b/Misc/NEWS.d/next/Windows/2024-02-01-14-35-05.gh-issue-111239.SO7SUF.rst
new file mode 100644
index 00000000000000..ea82c3b941f802
--- /dev/null
+++ b/Misc/NEWS.d/next/Windows/2024-02-01-14-35-05.gh-issue-111239.SO7SUF.rst
@@ -0,0 +1 @@
+Update Windows builds to use zlib v1.3.1.
diff --git a/PCbuild/get_externals.bat b/PCbuild/get_externals.bat
index 3919c0592ec00d..de73d923d8f4df 100644
--- a/PCbuild/get_externals.bat
+++ b/PCbuild/get_externals.bat
@@ -58,7 +58,7 @@ set libraries=%libraries% sqlite-3.44.2.0
if NOT "%IncludeTkinterSrc%"=="false" set libraries=%libraries% tcl-core-8.6.13.1
if NOT "%IncludeTkinterSrc%"=="false" set libraries=%libraries% tk-8.6.13.1
set libraries=%libraries% xz-5.2.5
-set libraries=%libraries% zlib-1.2.13
+set libraries=%libraries% zlib-1.3.1
for %%e in (%libraries%) do (
if exist "%EXTERNALS_DIR%\%%e" (
diff --git a/PCbuild/python.props b/PCbuild/python.props
index e8796081c4eaf3..2cb16693e546b1 100644
--- a/PCbuild/python.props
+++ b/PCbuild/python.props
@@ -78,7 +78,7 @@
$(ExternalsDir)openssl-bin-3.0.11\$(ArchName)\
$(opensslOutDir)include
$(ExternalsDir)\nasm-2.11.06\
- $(ExternalsDir)\zlib-1.2.13\
+ $(ExternalsDir)\zlib-1.3.1\