diff --git a/CuraEngine-3.6.20.obscpio b/CuraEngine-3.6.20.obscpio
deleted file mode 100644
index 2566f0f..0000000
--- a/CuraEngine-3.6.20.obscpio
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:d6c0bf41a89f4e31b5918c666b0922a78f2317437862ce06179f5277e7516e71
-size 4338188
diff --git a/CuraEngine-3.6.21.obscpio b/CuraEngine-3.6.21.obscpio
new file mode 100644
index 0000000..0cb953b
--- /dev/null
+++ b/CuraEngine-3.6.21.obscpio
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0ed16d299f58d0da08ad425ee39029b8c86b9e62a956d0ec2c145f796d21aab8
+size 4338188
diff --git a/CuraEngine.obsinfo b/CuraEngine.obsinfo
index 238a3d8..43cc886 100644
--- a/CuraEngine.obsinfo
+++ b/CuraEngine.obsinfo
@@ -1,5 +1,5 @@
 name: CuraEngine
-version: 3.6.20
+version: 3.6.21
 mtime: 1560420755
 commit: ec6a1a0f0aa387ef97e5c106633cf8d7fb9cd00d
 
diff --git a/_service b/_service
index a57955f..575cf15 100644
--- a/_service
+++ b/_service
@@ -2,8 +2,8 @@
   <service name="obs_scm" mode="disabled">
     <param name="url">https://code.alephobjects.com/diffusion/CTE/cura-engine.git</param>
     <param name="scm">git</param>
-    <param name="revision">v3.6.20</param>
-    <param name="version">3.6.20</param>
+    <param name="revision">v3.6.21</param>
+    <param name="version">3.6.21</param>
     <param name="submodules">disable</param>
     <param name="filename">CuraEngine</param>
   </service>
diff --git a/cura-engine-lulzbot.changes b/cura-engine-lulzbot.changes
index 7df6f89..af7d908 100644
--- a/cura-engine-lulzbot.changes
+++ b/cura-engine-lulzbot.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Fri Oct 11 05:38:03 UTC 2019 - Adrian Schröter <adrian@suse.de>
+
+- update to version 3.6.21
+  * no code changes
+
 -------------------------------------------------------------------
 Mon Oct  7 11:46:54 UTC 2019 - Adrian Schröter <adrian@suse.de>
 
diff --git a/cura-engine-lulzbot.spec b/cura-engine-lulzbot.spec
index e973c75..84720b3 100644
--- a/cura-engine-lulzbot.spec
+++ b/cura-engine-lulzbot.spec
@@ -17,7 +17,7 @@
 
 
 Name:           cura-engine-lulzbot
-Version:        3.6.20
+Version:        3.6.21
 Release:        0
 Summary:        3D printer control software
 License:        AGPL-3.0-only