diff --git a/cime_config/acme/machines/config_machines.xml b/cime_config/acme/machines/config_machines.xml
index 793dcafd2e5..aaebf427ca5 100644
--- a/cime_config/acme/machines/config_machines.xml
+++ b/cime_config/acme/machines/config_machines.xml
@@ -292,6 +292,7 @@
 	<command name="load">cmake/3.3.2</command>
 	<command name="load">pmi/5.0.10-1.0000.11050.0.0.ari</command>
 	<command name="load">papi/5.4.3.2</command>
+	<command name="load">zlib</command>
 	<!--command name="load">cray-petsc/3.7.0.0</command-->
       </modules>
     </module_system>
@@ -422,6 +423,7 @@
 	<command name="load">cmake/3.3.2</command>
 	<command name="load">pmi/5.0.10-1.0000.11050.0.0.ari</command>
 	<command name="load">papi/5.4.3.2</command>
+	<command name="load">zlib</command>
 	<!--command name="load">cray-petsc/3.7.0.0</command-->
       </modules>
     </module_system>