diff --git a/config/cesm/machines/config_machines.xml b/config/cesm/machines/config_machines.xml
index da8110b050c..67547aaf587 100644
--- a/config/cesm/machines/config_machines.xml
+++ b/config/cesm/machines/config_machines.xml
@@ -2565,7 +2565,7 @@ This allows using a different mpirun command to launch unit tests
     <DIN_LOC_ROOT_CLMFORC>/work/02503/edwardsj/CESM/inputdata/lmwg</DIN_LOC_ROOT_CLMFORC>
     <DOUT_S_ROOT>$ENV{WORK}/archive/$CASE</DOUT_S_ROOT>
     <BASELINE_ROOT>/work/02503/edwardsj/CESM/cesm_baselines</BASELINE_ROOT>
-    <CCSM_CPRNC>/work/02503/edwardsj/CESM/cime/tools/cprnc/cprnc</CCSM_CPRNC>
+    <CCSM_CPRNC>/work/02503/edwardsj/CESM/cime/tools/cprnc/cprnc.sp3</CCSM_CPRNC>
     <GMAKE_J>4</GMAKE_J>
     <BATCH_SYSTEM>slurm</BATCH_SYSTEM>
     <SUPPORTED_BY>cseg</SUPPORTED_BY>
@@ -2633,7 +2633,7 @@ This allows using a different mpirun command to launch unit tests
     <DIN_LOC_ROOT_CLMFORC>/work/02503/edwardsj/CESM/inputdata/lmwg</DIN_LOC_ROOT_CLMFORC>
     <DOUT_S_ROOT>$ENV{WORK}/archive/$CASE</DOUT_S_ROOT>
     <BASELINE_ROOT>/work/02503/edwardsj/CESM/cesm_baselines</BASELINE_ROOT>
-    <CCSM_CPRNC>/work/02503/edwardsj/CESM/cime/tools/cprnc/cprnc</CCSM_CPRNC>
+    <CCSM_CPRNC>/work/02503/edwardsj/CESM/cime/tools/cprnc/cprnc.sp3</CCSM_CPRNC>
     <GMAKE_J>4</GMAKE_J>
     <BATCH_SYSTEM>slurm</BATCH_SYSTEM>
     <SUPPORTED_BY>cseg</SUPPORTED_BY>
@@ -2705,7 +2705,7 @@ This allows using a different mpirun command to launch unit tests
     <DIN_LOC_ROOT_CLMFORC>/work/02503/edwardsj/CESM/inputdata/lmwg</DIN_LOC_ROOT_CLMFORC>
     <DOUT_S_ROOT>$ENV{WORK}/archive/$CASE</DOUT_S_ROOT>
     <BASELINE_ROOT>/work/02503/edwardsj/CESM/cesm_baselines</BASELINE_ROOT>
-    <CCSM_CPRNC>/work/02503/edwardsj/CESM/cime/tools/cprnc/cprnc</CCSM_CPRNC>
+    <CCSM_CPRNC>/work/02503/edwardsj/CESM/cime/tools/cprnc/cprnc.sp3</CCSM_CPRNC>
     <GMAKE_J>4</GMAKE_J>
     <BATCH_SYSTEM>slurm</BATCH_SYSTEM>
     <SUPPORTED_BY>cseg</SUPPORTED_BY>