diff --git a/RELEASE-NOTES-1.37 b/RELEASE-NOTES-1.37
index 6c7cc926667..dadcd7208fe 100644
--- a/RELEASE-NOTES-1.37
+++ b/RELEASE-NOTES-1.37
@@ -49,6 +49,7 @@ For notes on 1.36.x and older releases, see HISTORY.
 
 ==== New external libraries ====
 * Added whatwg-fetch 3.6.2.
+* Added wikimedia/normalized-exception 1.0.1.
 * …
 
 ===== New development-only external libraries =====
diff --git a/composer.json b/composer.json
index 434733f0d18..d2e5334861d 100644
--- a/composer.json
+++ b/composer.json
@@ -55,6 +55,7 @@
 		"wikimedia/ip-utils": "3.0.2",
 		"wikimedia/less.php": "3.1.0",
 		"wikimedia/minify": "2.2.3",
+		"wikimedia/normalized-exception": "1.0.1",
 		"wikimedia/object-factory": "3.0.2",
 		"wikimedia/parsoid": "^0.14.0-a1@alpha",
 		"wikimedia/php-session-serializer": "2.0.0",