diff --git a/cime_config/testdefs/testlist_cam.xml b/cime_config/testdefs/testlist_cam.xml
index 09d4183f4b..193e3d4246 100644
--- a/cime_config/testdefs/testlist_cam.xml
+++ b/cime_config/testdefs/testlist_cam.xml
@@ -77,7 +77,7 @@
       <machine name="derecho" compiler="intel" category="aux_cam_short"/>
     </machines>
     <options>
-      <option name="wallclock">00:10:00</option>
+      <option name="wallclock">00:20:00</option>
     </options>
   </test>