diff --git a/src/systemc/tests/working.filt b/src/systemc/tests/working.filt
index e28b74b..75cc837 100644
--- a/src/systemc/tests/working.filt
+++ b/src/systemc/tests/working.filt
@@ -12,6 +12,11 @@
 # something we're not currently planning to support.
 path.startswith("systemc/kernel/sc_process_b"),
 
+# Phase callbacks are an experimental feature. Also calling all the interested
+# sc_objects whenever time advances would add a non-trivial amount of
+# complexity and is probably not worth implementing in general.
+path.startswith("systemc/kernel/phase_callbacks/"),
+
 
 path in (
     # Uses sc_get_curr_simcontext.