diff --git a/psalm.xml b/psalm.xml
new file mode 100644
index 0000000000..50f8ba772d
--- /dev/null
+++ b/psalm.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0"?>
+<psalm
+    errorLevel="5"
+    phpVersion="7.3"
+    resolveFromConfigFile="true"
+    autoloader="tests/bootstrap.php"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xmlns="https://getpsalm.org/schema/config"
+    xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
+>
+    <projectFiles>
+        <directory name="phpBB/phpbb"/>
+    </projectFiles>
+</psalm>