diff --git a/pngquant-2.15.1.tar.gz b/pngquant-2.15.1.tar.gz
deleted file mode 100644
index 0d04fb2..0000000
--- a/pngquant-2.15.1.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:24856b28aca47ed78633fa625eb74b85782d62dacc4bca634fcedf2f6e95c4b7
-size 71163
diff --git a/pngquant-2.17.0.tar.gz b/pngquant-2.17.0.tar.gz
new file mode 100644
index 0000000..9f8a288
--- /dev/null
+++ b/pngquant-2.17.0.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bc1baa43c814b4416bb63d7b2168d4e5395cfc69a00f8997a595361caa507887
+size 71209
diff --git a/pngquant.changes b/pngquant.changes
index efe25cf..3df2834 100644
--- a/pngquant.changes
+++ b/pngquant.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Sat Nov 27 13:07:38 UTC 2021 - Dirk Müller <dmueller@suse.com>
+
+- update to 2.17.0:
+  - reduced stack usage, preventing stack overflow in pathological cases
+
 -------------------------------------------------------------------
 Sun Jun  6 12:59:12 UTC 2021 - Dirk Müller <dmueller@suse.com>
 
diff --git a/pngquant.spec b/pngquant.spec
index 02ed74a..b695f0d 100644
--- a/pngquant.spec
+++ b/pngquant.spec
@@ -17,7 +17,7 @@
 
 
 Name:           pngquant
-Version:        2.15.1
+Version:        2.17.0
 Release:        0
 Summary:        Tool for lossy compression of PNG images
 License:        GPL-3.0-or-later