diff --git a/plugin_compatibility.json b/plugin_compatibility.json
index d816c0f..269ea5c 100644
--- a/plugin_compatibility.json
+++ b/plugin_compatibility.json
@@ -1,12 +1,14 @@
 [
   {
     "moodle": "MOODLE_404_STABLE",
-    "PHP": ["8.1", "8.2", "8.3"]
+    "PHP": [
+      "8.2",
+      "8.3"
+    ]
   },
   {
     "moodle": "MOODLE_405_STABLE",
     "PHP": [
-      "8.1",
       "8.2",
       "8.3"
     ]