diff --git a/HISTORY.md b/HISTORY.md
index b296bea2a..3a2cd728b 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,6 +1,11 @@
 # History
 
 
+# not yet published, version 5.9.1
+
+- Fix `lib/header.js` not having filled in date and version. Thanks @kevjin.
+
+
 # 2019-04-08, version 5.9.0
 
 - Implemented functions `row` and `column` (see #1413). Thanks @SzechuanSage.
diff --git a/package.json b/package.json
index f1ffce7d6..eee981adf 100644
--- a/package.json
+++ b/package.json
@@ -52,7 +52,8 @@
     "Karl Lew (https://github.com/firepick1)",
     "Kenan Yildirim (https://github.com/KenanY)",
     "Keunhong Park (https://github.com/void42)",
-    "Kunal Vyas (https://github.com/kv-kunalvyas)",
+    "Keunhong Park (https://github.com/kevjin)",
+    "Kevin J (https://github.com/kv-kunalvyas)",
     "Marcus Andre (https://github.com/marcusandre)",
     "Horatiu Lazu (https://github.com/MathBunny)",
     "Mathias Polligkeit (https://github.com/woylie)",