diff --git a/ports/libpq/portfile.cmake b/ports/libpq/portfile.cmake
index 13df66d542..6c1a21c52b 100644
--- a/ports/libpq/portfile.cmake
+++ b/ports/libpq/portfile.cmake
@@ -2,7 +2,7 @@ vcpkg_download_distfile(ARCHIVE
     URLS "https://ftp.postgresql.org/pub/source/v${VERSION}/postgresql-${VERSION}.tar.bz2"
          "https://www.mirrorservice.org/sites/ftp.postgresql.org/source/v${VERSION}/postgresql-${VERSION}.tar.bz2"
     FILENAME "postgresql-${VERSION}.tar.bz2"
-    SHA512 fdbe6d726f46738cf14acab96e5c05f7d65aefe78563281b416bb14a27c7c42e4df921e26b32816a5030ddbe506b95767e2c74a35afc589916504df38d1cb11c
+    SHA512 1a7606b5b2460a4fc817d491e1e03262df17ece6869fa3d2b80647baffcfb790fbcfa019c3b10fab9f9a14218651b6a358864e40a5d8c5ddc796db2d6e5b469c
 )
 
 vcpkg_extract_source_archive(
diff --git a/ports/libpq/vcpkg.json b/ports/libpq/vcpkg.json
index dd648ebca0..2dd780c6aa 100644
--- a/ports/libpq/vcpkg.json
+++ b/ports/libpq/vcpkg.json
@@ -1,7 +1,6 @@
 {
   "name": "libpq",
-  "version": "18.3",
-  "port-version": 2,
+  "version": "18.4",
   "description": "The official database access API of postgresql",
   "homepage": "https://www.postgresql.org/",
   "license": "PostgreSQL",
@@ -13,8 +12,7 @@
     },
     {
       "name": "vcpkg-tool-meson",
-      "host": true,
-      "version>=": "1.9.0#7"
+      "host": true
     }
   ],
   "default-features": [
diff --git a/versions/baseline.json b/versions/baseline.json
index 293dd3d2b0..fe044aec29 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -5485,8 +5485,8 @@
       "port-version": 18
     },
     "libpq": {
-      "baseline": "18.3",
-      "port-version": 2
+      "baseline": "18.4",
+      "port-version": 0
     },
     "libpqxx": {
       "baseline": "8.0.1",
diff --git a/versions/l-/libpq.json b/versions/l-/libpq.json
index 5a1ae66a69..fbb0453eec 100644
--- a/versions/l-/libpq.json
+++ b/versions/l-/libpq.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "8c165a9c39a43f72289e216677d33fdf161144f8",
+      "version": "18.4",
+      "port-version": 0
+    },
     {
       "git-tree": "c4799c5289cd6e9c35381834ec8137b682614e77",
       "version": "18.3",