diff --git a/RELEASE-NOTES-1.42 b/RELEASE-NOTES-1.42
index 581248a7f1b..c361ade8a7a 100644
--- a/RELEASE-NOTES-1.42
+++ b/RELEASE-NOTES-1.42
@@ -86,7 +86,7 @@ For notes on 1.41.x and older releases, see HISTORY.
 ==== Changed external libraries ====
 * Updated OOUI from v0.48.1 to v0.48.4.
 * Updated codex, codex-design-tokens and codex-icons
-  from v1.0.0 to v1.3.0.
+  from v1.0.0 to v1.3.1.
 * Updated wikimedia/minify from v2.5.1 to v2.7.0.
 * Updated Vue from v3.2.37-compat to v3.3.9.
 * Updated pear/mail from 1.5.1 to 1.6.0.
diff --git a/resources/lib/codex-design-tokens/theme-wikimedia-ui-legacy.less b/resources/lib/codex-design-tokens/theme-wikimedia-ui-legacy.less
index af3ed0c6d1e..ccaa7c9a72d 100644
--- a/resources/lib/codex-design-tokens/theme-wikimedia-ui-legacy.less
+++ b/resources/lib/codex-design-tokens/theme-wikimedia-ui-legacy.less
@@ -1,5 +1,5 @@
 
-// Codex Design Tokens v1.3.0
+// Codex Design Tokens v1.3.1
 // Design System for Wikimedia
 // See https://doc.wikimedia.org/codex/latest/design-tokens/overview.html
 
diff --git a/resources/lib/codex-design-tokens/theme-wikimedia-ui.less b/resources/lib/codex-design-tokens/theme-wikimedia-ui.less
index 5d79581afa6..10434461c72 100644
--- a/resources/lib/codex-design-tokens/theme-wikimedia-ui.less
+++ b/resources/lib/codex-design-tokens/theme-wikimedia-ui.less
@@ -1,5 +1,5 @@
 
-// Codex Design Tokens v1.3.0
+// Codex Design Tokens v1.3.1
 // Design System for Wikimedia
 // See https://doc.wikimedia.org/codex/latest/design-tokens/overview.html
 
diff --git a/resources/lib/foreign-resources.yaml b/resources/lib/foreign-resources.yaml
index 7b4c7178876..6976a699eac 100644
--- a/resources/lib/foreign-resources.yaml
+++ b/resources/lib/foreign-resources.yaml
@@ -147,8 +147,8 @@ codex:
   authors: Design Systems team, Wikimedia Foundation
   version: 1.3.0
   type: tar
-  src: https://registry.npmjs.org/@wikimedia/codex/-/codex-1.3.0.tgz
-  integrity: sha384-+SqmAnEtF/NG5z6CvM+UZ+cxPgKNLdgel1c0Slzpq+wv93mFFOJERrH2J/o48t33
+  src: https://registry.npmjs.org/@wikimedia/codex/-/codex-1.3.1.tgz
+  integrity: sha384-wfjg2SztFpjNPCi9cfSL/EX3raAsSX5TtXhL6ZWIiM5h1Vaslvf5N8rsA+OmGJ/c
   dest:
     package/dist/codex.cjs:
     package/dist/codex.js:
@@ -174,8 +174,8 @@ codex-design-tokens:
   authors: Design Systems team, Wikimedia Foundation
   version: 1.3.0
   type: tar
-  src: https://registry.npmjs.org/@wikimedia/codex-design-tokens/-/codex-design-tokens-1.3.0.tgz
-  integrity: sha384-mGZ15cOvTVl+42+AlrwRgXc8K1vYnAyiM6y5k/Er+8NQYWe3E+r7pJLwYxeYjWAC
+  src: https://registry.npmjs.org/@wikimedia/codex-design-tokens/-/codex-design-tokens-1.3.1.tgz
+  integrity: sha384-Mt2ae2i4Ruvg0bTXHgyJlUv0w4GsK+uT4WxDKHqfUN5+1IHOIbuUBt8vtY4tT5CF
   dest:
     package/dist/theme-wikimedia-ui.less:
     package/dist/theme-wikimedia-ui-legacy.less:
@@ -188,8 +188,8 @@ codex-icons:
   authors: Design Systems team, Wikimedia Foundation
   version: 1.3.0
   type: tar
-  src: https://registry.npmjs.org/@wikimedia/codex-icons/-/codex-icons-1.3.0.tgz
-  integrity: sha384-aGUQd/zDAtI/lE9A6Pt05h9+UpIQau2PJ+WJeO6EPKSY3qVIV5YS0iqXVdUEoN4t
+  src: https://registry.npmjs.org/@wikimedia/codex-icons/-/codex-icons-1.3.1.tgz
+  integrity: sha384-pmhYC2/9KGLD2+GlIcbIynOAlN9PvROOXNEzIjT9a2IcfMu3Ak5HMHOBfUcm9KK/
   dest:
     package/dist/codex-icons.json:
     package/dist/codex-icon-paths.less: