diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7151abf..8a82fad 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+## Version 2.2
+* [compatibility, deprecated] Fix for deprecated wfSuppressWarnings and wfRestoreWarnings with new Wikimedia\...
+* [b/c break] Version minor bump, MW >= 1.31.0 now required
+* [enhancement] Use of requires MW version in skin.json
+
+
 ## Version 2.1.1
 
 * [CSS, enhancement] Improvements correcting Issues #72 and #69, images the MW way
diff --git a/Pivot.skin.php b/Pivot.skin.php
index a33899c..685acb6 100644
--- a/Pivot.skin.php
+++ b/Pivot.skin.php
@@ -60,7 +60,7 @@ class pivotTemplate extends BaseTemplate {
 	public function execute() {
 		global $wgUser;
 		global $wgPivotFeatures;
-		wfSuppressWarnings();
+		Wikimedia\suppressWarnings();
 		$this->html('headelement');
 		switch ($wgPivotFeatures['usePivotTabs']) {
 			case true:
@@ -296,7 +296,7 @@ class pivotTemplate extends BaseTemplate {
 		</html>
 
 <?php
-		wfRestoreWarnings();
+		Wikimedia\restoreWarnings;
 		
 	}
 	
diff --git a/skin.json b/skin.json
index a0d43ab..a0cccd1 100644
--- a/skin.json
+++ b/skin.json
@@ -1,6 +1,6 @@
 {
 	"name": "Pivot",
-	"version": "2.1.1-dev",
+	"version": "2.2.0",
 	"author": [
 		"Tom Hutchison",
 		"..."
@@ -12,6 +12,9 @@
 	"ValidSkinNames": {
 		"pivot": "Pivot"
 	},
+	"requires": {
+		"MediaWiki": ">= 1.31.0"
+	},
 	"MessagesDirs": {
 		"Skinpivot": [
 			"i18n"