diff --git a/composer.json b/composer.json
index 38ba92eb6b597d0bfb9dc276756a99ef2b7db7a8..2becd014ce31c4de5d95e8420386ac895cd4c2f4 100644
--- a/composer.json
+++ b/composer.json
@@ -31,7 +31,7 @@
     },
     "require": {
         "php": ">=7.1",
-        "composer/installers": "1.11.0",
+        "composer/installers": "1.12.0",
         "oomphinc/composer-installers-extender": "2.0.0",
         "cweagans/composer-patches": "1.7.1",
         "koodimonni/composer-dropin-installer": "1.3",
diff --git a/composer.lock b/composer.lock
index b39bd42ec86417c25f69ab9bca62964be4c39c58..8368f886b0bed23250dc3da6d2e5a1a423274c46 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "f1a9c1bb6cf87bf5d7fe1f47e3cfc217",
+    "content-hash": "2249c29c388f84b8642364119f123d07",
     "packages": [
         {
             "name": "bjornjohansen/wplang",
@@ -47,16 +47,16 @@
         },
         {
             "name": "composer/installers",
-            "version": "v1.11.0",
+            "version": "v1.12.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/composer/installers.git",
-                "reference": "ae03311f45dfe194412081526be2e003960df74b"
+                "reference": "d20a64ed3c94748397ff5973488761b22f6d3f19"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/composer/installers/zipball/ae03311f45dfe194412081526be2e003960df74b",
-                "reference": "ae03311f45dfe194412081526be2e003960df74b",
+                "url": "https://api.github.com/repos/composer/installers/zipball/d20a64ed3c94748397ff5973488761b22f6d3f19",
+                "reference": "d20a64ed3c94748397ff5973488761b22f6d3f19",
                 "shasum": ""
             },
             "require": {
@@ -155,6 +155,7 @@
                 "modx",
                 "moodle",
                 "osclass",
+                "pantheon",
                 "phpbb",
                 "piwik",
                 "ppi",
@@ -189,7 +190,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-04-28T06:42:17+00:00"
+            "time": "2021-09-13T08:19:44+00:00"
         },
         {
             "name": "cweagans/composer-patches",