diff --git a/packaging/focal/rules b/packaging/focal/rules
index e73eae0..9658eff 100755
--- a/packaging/focal/rules
+++ b/packaging/focal/rules
@@ -14,7 +14,7 @@
 #export DEB_LDFLAGS_MAINT_APPEND = -Wl,--as-needed
 
 %:
-	dh $@
+	dh $@ --no-parallel
 
 
 # dh_make generated override targets