diff --git a/ports/zeromq/portfile.cmake b/ports/zeromq/portfile.cmake
index ce595ce0f1e12d..f24002911ccbee 100644
--- a/ports/zeromq/portfile.cmake
+++ b/ports/zeromq/portfile.cmake
@@ -1,9 +1,24 @@
+vcpkg_download_distfile(patch4310
+    URLS "https://patch-diff.githubusercontent.com/raw/zeromq/libzmq/pull/4310.diff"
+    FILENAME "zeromq-libzmq-4310.diff"
+    SHA512 64e6d37ab843e5b9aa9e56ba7904423ce0a2c6b4101dbd86b7b8b22c52c384ed7ea9764f9e0a53be04e7ade09923ca95452104e9760b66ebc0ed3ffef08a75c5
+)
+
+vcpkg_download_distfile(patch4311
+    URLS "https://patch-diff.githubusercontent.com/raw/zeromq/libzmq/pull/4311.diff"
+    FILENAME "zeromq-libzmq-4311.diff"
+    SHA512 2b04e0ce4743d27070ea832c45e2d8fa0091c755757937cfa2a2bb43283ee38dc9f27343989e1ad8c45fda8a3cfaa012250b0c581e2f0407938cbb61b2a21e63
+)
+
 vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO zeromq/libzmq
     REF v4.3.4
     SHA512 ad828b1ab5a87983285a6b44b08240816ed1c4e2c73306ab1a851bf80df1892b5e2f92064a49fbadc1f4c75043625ace77dd25b64d5d1c2a7d1d61cc916fba0b
-    PATCHES fix-arm.patch
+    PATCHES 
+        fix-arm.patch
+        ${patch4310}
+        ${patch4311}
 )
 
 string(COMPARE EQUAL "${VCPKG_LIBRARY_LINKAGE}" "static" BUILD_STATIC)
@@ -12,8 +27,8 @@ string(COMPARE EQUAL "${VCPKG_LIBRARY_LINKAGE}" "dynamic" BUILD_SHARED)
 vcpkg_check_features(
     OUT_FEATURE_OPTIONS FEATURE_OPTIONS
     FEATURES
-        sodium WITH_LIBSODIUM
-        draft ENABLE_DRAFTS
+        sodium          WITH_LIBSODIUM
+        draft           ENABLE_DRAFTS
         websockets-sha1 ENABLE_WS
 )
 
@@ -23,7 +38,7 @@ if(VCPKG_TARGET_IS_MINGW)
 endif()
 
 vcpkg_cmake_configure(
-    SOURCE_PATH ${SOURCE_PATH}
+    SOURCE_PATH "${SOURCE_PATH}"
     OPTIONS
         -DZMQ_BUILD_TESTS=OFF
         -DBUILD_STATIC=${BUILD_STATIC}
diff --git a/ports/zeromq/vcpkg.json b/ports/zeromq/vcpkg.json
index 7c49777350c489..89abe2fd9a76ca 100644
--- a/ports/zeromq/vcpkg.json
+++ b/ports/zeromq/vcpkg.json
@@ -1,9 +1,10 @@
 {
   "name": "zeromq",
   "version": "4.3.4",
-  "port-version": 3,
+  "port-version": 4,
   "description": "The ZeroMQ lightweight messaging kernel is a library which extends the standard socket interfaces with features traditionally provided by specialised messaging middleware products",
   "homepage": "https://github.com/zeromq/libzmq",
+  "license": "LGPL-3.0-only",
   "supports": "!uwp",
   "dependencies": [
     {
diff --git a/versions/baseline.json b/versions/baseline.json
index 0e6b08ccacb59b..ac98327a06788e 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -7502,7 +7502,7 @@
     },
     "zeromq": {
       "baseline": "4.3.4",
-      "port-version": 3
+      "port-version": 4
     },
     "zfp": {
       "baseline": "0.5.5",
diff --git a/versions/z-/zeromq.json b/versions/z-/zeromq.json
index 822bd69ccddcfc..fe9da3be4e7333 100644
--- a/versions/z-/zeromq.json
+++ b/versions/z-/zeromq.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "efc9d6229adaef7b036d222004dd786353f8cd4e",
+      "version": "4.3.4",
+      "port-version": 4
+    },
     {
       "git-tree": "46cd1dcc3bc077341533cc01c32f467d1a7e181f",
       "version": "4.3.4",