diff --git a/cmake/versions.cmake b/cmake/versions.cmake
index 7df58a0d..b7936006 100644
--- a/cmake/versions.cmake
+++ b/cmake/versions.cmake
@@ -6,4 +6,4 @@ set(GTEST_VERSION 1.14.0)
 set(LIBSODIUM_VERSION 1.0.19)
 set(OPENSSL_VERSION 3.2.0)
 set(WINFSP_VERSION 2.0)
-set(ZLIB_VERSION 1.3)
+set(ZLIB_VERSION 1.3.1)
diff --git a/docker/64_bit/mingw64 b/docker/64_bit/mingw64
index fe4e69db..26ae46f4 100644
--- a/docker/64_bit/mingw64
+++ b/docker/64_bit/mingw64
@@ -224,7 +224,7 @@ RUN python3 -m pip install --break-system-packages -U mako
 RUN python3 -m pip install --break-system-packages -U meson
 RUN python3 -m pip install --break-system-packages -U packaging
 
-ARG ZLIB_VERSION=1.3
+ARG ZLIB_VERSION=1.3.1
 ENV MY_ZLIB_VERSION=${ZLIB_VERSION}
 RUN set -ex \
     \