diff --git a/ports/libpopcnt/portfile.cmake b/ports/libpopcnt/portfile.cmake
index 9e61a5a390..4932714978 100644
--- a/ports/libpopcnt/portfile.cmake
+++ b/ports/libpopcnt/portfile.cmake
@@ -4,7 +4,7 @@ vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO kimwalisch/libpopcnt
     REF "v${VERSION}"
-    SHA512 b01f1446c951b848357ed01e31cb2d1014639ba854710edcc5703b69226b9ca2e65c84d78308cf345654fbfc92ce467bb5a5171158db5b94f979674efb59f6dc
+    SHA512 5c79fb6690bd39f322430657b26508b8092c1d1d078b435d35fd20771053c021cbc7e819d7a4fb2bb88bf527f5fbab7ba992dca02009eb20cff70d2d369a6658
     HEAD_REF master
 )
 
diff --git a/ports/libpopcnt/vcpkg.json b/ports/libpopcnt/vcpkg.json
index ba012c0627..7e24daf033 100644
--- a/ports/libpopcnt/vcpkg.json
+++ b/ports/libpopcnt/vcpkg.json
@@ -1,6 +1,6 @@
 {
   "name": "libpopcnt",
-  "version": "3.1",
+  "version": "4.2",
   "description": "Fast C/C++ bit population count library",
   "homepage": "https://github.com/kimwalisch/libpopcnt",
   "license": "BSD-2-Clause"
diff --git a/versions/baseline.json b/versions/baseline.json
index c4f0f137a7..2e12f6c26f 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -5541,7 +5541,7 @@
       "port-version": 0
     },
     "libpopcnt": {
-      "baseline": "3.1",
+      "baseline": "4.2",
       "port-version": 0
     },
     "libpopt": {
diff --git a/versions/l-/libpopcnt.json b/versions/l-/libpopcnt.json
index 27c168c602..8179028c11 100644
--- a/versions/l-/libpopcnt.json
+++ b/versions/l-/libpopcnt.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "9753caa1c7c393b6fc15192458a04dcf26a01b10",
+      "version": "4.2",
+      "port-version": 0
+    },
     {
       "git-tree": "75540d799c09ac684dcd0e1503129e471621e626",
       "version": "3.1",