diff --git a/cantera.spec b/cantera.spec
index f67f911..1cd5026 100644
--- a/cantera.spec
+++ b/cantera.spec
@@ -40,6 +40,7 @@ BuildRequires:  gcc-gfortran
 
 %global scons scons%{?rhel:-3}
 
+ExcludeArch: s390x      # YAML test failures - BZ #2044056
 
 %global common_description %{expand: \
  Cantera is a suite of object-oriented software tools for solving problems