diff --git a/ports/glibmm/portfile.cmake b/ports/glibmm/portfile.cmake
index 0eecc5ce3f..b952b9ffdd 100644
--- a/ports/glibmm/portfile.cmake
+++ b/ports/glibmm/portfile.cmake
@@ -3,7 +3,7 @@ string(REGEX MATCH "^([0-9]*[.][0-9]*)" GLIBMM_MAJOR_MINOR "${VERSION}")
 vcpkg_download_distfile(GLIBMM_ARCHIVE
     URLS "https://ftp.gnome.org/pub/GNOME/sources/glibmm/${GLIBMM_MAJOR_MINOR}/glibmm-${VERSION}.tar.xz"
     FILENAME "glibmm-${VERSION}.tar.xz"
-    SHA512 550c9087ead950de3d7de2eac29ea7cab23c70ce1a0081c162df0369765d547d754dc296a0f06ab494df01f43f7bab29dfb88b6d2fdf920eebc3aef896dff1f0
+    SHA512 af05171b4651e94f4ef0d8e06a27160cd1a7b0a4e596ba7b6584567564829a60031f27ab96a25ba7fefb6395026f4cb40a5eaf1c5bc2e15428c18fd4d52b9328
 )
 
 vcpkg_extract_source_archive(
diff --git a/ports/glibmm/vcpkg.json b/ports/glibmm/vcpkg.json
index 6b8dc2d66f..b05051dd62 100644
--- a/ports/glibmm/vcpkg.json
+++ b/ports/glibmm/vcpkg.json
@@ -1,6 +1,6 @@
 {
   "name": "glibmm",
-  "version": "2.88.0",
+  "version": "2.88.1",
   "description": "This is glibmm, a C++ API for parts of glib that are useful for C++.",
   "homepage": "https://www.gtkmm.org.",
   "license": "LGPL-2.1-or-later",
diff --git a/versions/baseline.json b/versions/baseline.json
index 5cd0e1ed20..bd18aae8b8 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -3473,7 +3473,7 @@
       "port-version": 0
     },
     "glibmm": {
-      "baseline": "2.88.0",
+      "baseline": "2.88.1",
       "port-version": 0
     },
     "glm": {
diff --git a/versions/g-/glibmm.json b/versions/g-/glibmm.json
index f50062ea1b..a083807461 100644
--- a/versions/g-/glibmm.json
+++ b/versions/g-/glibmm.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "d25f6508618942911a63de0976e9f0a8b0b02255",
+      "version": "2.88.1",
+      "port-version": 0
+    },
     {
       "git-tree": "473c7a4b9ab2ba7cbffa0c9f54357969363f0e6f",
       "version": "2.88.0",