diff --git a/src/Psalm/Internal/CliUtils.php b/src/Psalm/Internal/CliUtils.php
index 5abba2fd442..bff213e69cc 100644
--- a/src/Psalm/Internal/CliUtils.php
+++ b/src/Psalm/Internal/CliUtils.php
@@ -342,6 +342,9 @@ public static function getPsalmHelpText(): string
 
     --no-diff
         Turns off Psalm’s diff mode, checks all files regardless of whether they’ve changed.
+        
+    --php-version=PHP_VERSION
+        Explicitly set PHP version to analyse code against. 
 
 Surfacing issues:
     --show-info[=BOOLEAN]