diff --git a/pacemaker.spec b/pacemaker.spec
index 3efa2e8..546c071 100644
--- a/pacemaker.spec
+++ b/pacemaker.spec
@@ -121,6 +121,7 @@ Requires:       libpacemaker3 = %{version}-%{release}
 %if %{enable_lib_cluster_pkg}
 Requires:       libpacemaker3-cluster = %{version}-%{release}
 %endif
+Requires:       psmisc
 Requires:       python
 Requires:       resource-agents
 Recommends:     crmsh