diff --git a/packages/network_traffic/_dev/test/config.yml b/packages/network_traffic/_dev/test/config.yml
index a57750f85ea..1986d1864ea 100644
--- a/packages/network_traffic/_dev/test/config.yml
+++ b/packages/network_traffic/_dev/test/config.yml
@@ -1,2 +1,2 @@
 system:
-  parallel: true
+  parallel: false
diff --git a/packages/zeek/_dev/test/config.yml b/packages/zeek/_dev/test/config.yml
index a57750f85ea..1986d1864ea 100644
--- a/packages/zeek/_dev/test/config.yml
+++ b/packages/zeek/_dev/test/config.yml
@@ -1,2 +1,2 @@
 system:
-  parallel: true
+  parallel: false