diff --git a/libimagequant-2.14.1.tar.gz b/libimagequant-2.14.1.tar.gz
deleted file mode 100644
index d9893bf..0000000
--- a/libimagequant-2.14.1.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:b5fa27da1f3cf3e8255dd02778bb6a51dc71ce9f99a4fc930ea69b83200a7c74
-size 98289
diff --git a/libimagequant-2.15.1.tar.gz b/libimagequant-2.15.1.tar.gz
new file mode 100644
index 0000000..2adae41
--- /dev/null
+++ b/libimagequant-2.15.1.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3a9548f99be8c3b20a5d9407d0ca95bae8b0fb424a2735a87cb6cf3fdd028225
+size 98668
diff --git a/libimagequant.changes b/libimagequant.changes
index a2d5a0f..b9003e8 100644
--- a/libimagequant.changes
+++ b/libimagequant.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Sun Jun  6 13:00:05 UTC 2021 - Dirk Müller <dmueller@suse.com>
+
+- update to 2.15.1:
+  - speed and quality improvements 
+
 -------------------------------------------------------------------
 Sat May  8 18:10:01 UTC 2021 - Dirk Müller <dmueller@suse.com>
 
diff --git a/libimagequant.spec b/libimagequant.spec
index 8cdbed3..2e89953 100644
--- a/libimagequant.spec
+++ b/libimagequant.spec
@@ -19,7 +19,7 @@
 %define sover   0
 %define libname %{name}%{sover}
 Name:           libimagequant
-Version:        2.14.1
+Version:        2.15.1
 Release:        0
 Summary:        Palette quantization library
 License:        GPL-3.0-or-later