diff --git a/ChangeLog.md b/ChangeLog.md
index d84dd60..0148217 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -4,6 +4,14 @@ Change Log
 All notable changes to the project are documented in this file.
 
 
+[v1.9.1][] - 2017-07-03
+-----------------------
+
+### Changes
+- Add missing `whichp()` predicate function to accompany `which()`
+- Allow `which("ps aux")`, which skips any arguments to command
+
+
 [v1.9.0][] - 2017-07-02
 -----------------------
 
@@ -244,7 +252,8 @@ problems this may cause!
 Initial extraction of frog DNA from [Finit][].  See [README][] for API details.
 
 
-[UNRELEASED]: https://github.com/troglobit/libite/compare/v1.9.0...HEAD
+[UNRELEASED]: https://github.com/troglobit/libite/compare/v1.9.1...HEAD
+[v1.9.1]: https://github.com/troglobit/libite/compare/v1.9.0...v1.9.1
 [v1.9.0]: https://github.com/troglobit/libite/compare/v1.8.3...v1.9.0
 [v1.8.3]: https://github.com/troglobit/libite/compare/v1.8.2...v1.8.3
 [v1.8.2]: https://github.com/troglobit/libite/compare/v1.8.1...v1.8.2
diff --git a/configure.ac b/configure.ac
index 50f46d4..8989a5d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,4 @@
-AC_INIT(libite, 1.9.0, https://github.com/troglobit/libite/issues)
+AC_INIT(libite, 1.9.1, https://github.com/troglobit/libite/issues)
 AM_INIT_AUTOMAKE([1.11 foreign no-dist-gzip dist-xz])
 AM_SILENT_RULES([yes])
 
diff --git a/debian/changelog b/debian/changelog
index d927df4..645fcf5 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+libite (1.9.1-1) unstable; urgency=low
+
+  * New upstream reelase, v1.9.1.
+
+ -- Joachim Nilsson <troglobit@gmail.com>  Sun, 02 Jul 2017 19:23:00 +0100
+
 libite (1.9.0-1) unstable; urgency=low
 
   * New upstream reelase.