diff --git a/tools/mdslicer/md_slicer.xml b/tools/mdslicer/md_slicer.xml
index 41900b73..db8424aa 100644
--- a/tools/mdslicer/md_slicer.xml
+++ b/tools/mdslicer/md_slicer.xml
@@ -1,7 +1,7 @@
 <tool id="md_slicer" name="Slice MD trajectories" version="@TOOL_VERSION@+galaxy@GALAXY_VERSION@">
     <description>using the MDTraj package</description>
     <macros>
-        <token name="@TOOL_VERSION@">1.9.8</token>
+        <token name="@TOOL_VERSION@">1.9.9</token>
         <token name="@GALAXY_VERSION@">0</token>
     </macros>
     <requirements>