diff --git a/conf/app.src b/conf/app.src
index f87fe16..b5eeba8 100644
--- a/conf/app.src
+++ b/conf/app.src
@@ -1,5 +1,5 @@
-SOURCE_URL=https://releases.wikimedia.org/mediawiki/1.38/mediawiki-1.38.2.tar.gz
-SOURCE_SUM=697eb3bdbf31d09810066133cc7b5ca2d9629c77eea61ce16a05bc99703d53a6
+SOURCE_URL=https://releases.wikimedia.org/mediawiki/1.38/mediawiki-1.38.4.tar.gz
+SOURCE_SUM=d2b3a32d42a41eb65838fc30878307f7d63303c34a7e862411055a83b502b497
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=tar.gz
 SOURCE_IN_SUBDIR=true
diff --git a/manifest.json b/manifest.json
index eea0193..38fd17a 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "Wiki package originally for use on Wikipedia",
         "fr": "Wiki développé à l’origine pour Wikipédia"
     },
-    "version": "1.38.2~ynh1",
+    "version": "1.38.4~ynh1",
     "url": "https://www.mediawiki.org",
     "upstream": {
         "license": "GPL-2.0-or-later",