diff --git a/openigtlink.spec b/openigtlink.spec
index 2676c5e..4f8300e 100644
--- a/openigtlink.spec
+++ b/openigtlink.spec
@@ -3,7 +3,7 @@
 
 Name:		openigtlink
 Version:	2.1
-Release:	9%{?dist}
+Release:	10%{?dist}
 Summary:	Implementation of the OpenIGTLink network communication protocol
 
 License:	BSD
@@ -67,6 +67,7 @@ find . -type f -executable -a \( -name '*.h' -o -name '*.cxx' \) -exec chmod a-x
 %cmake_install
 
 %check
+%global _smp_mflags -j1
 %ctest
 
 %files
@@ -81,6 +82,9 @@ find . -type f -executable -a \( -name '*.h' -o -name '*.cxx' \) -exec chmod a-x
 
 
 %changelog
+* Fri Sep 04 2020 Ankur Sinha <ankursinha AT fedoraproject DOT org> - 2.1-10
+- Make ctest run serially
+
 * Fri Sep 04 2020 Ankur Sinha <ankursinha AT fedoraproject DOT org> - 2.1-9
 - Use cmake macros to fix build