diff --git a/tsl/test/isolation/expected/continuous_aggs_insert.out b/tsl/test/isolation/expected/continuous_aggs_insert.out
index 7dc8851b9..e84a39764 100644
--- a/tsl/test/isolation/expected/continuous_aggs_insert.out
+++ b/tsl/test/isolation/expected/continuous_aggs_insert.out
@@ -1,4 +1,4 @@
-Parsed test spec with 8 sessions
+Parsed test spec with 12 sessions
 
 starting permutation: LockCompleted Refresh2 Refresh UnlockCompleted
 step LockCompleted: BEGIN; LOCK TABLE _timescaledb_catalog.continuous_aggs_completed_threshold;
@@ -131,39 +131,35 @@ step Refresh: REFRESH MATERIALIZED VIEW continuous_view; <waiting ...>
 step UnlockInval: ROLLBACK;
 step Refresh: <... completed>
 
-starting permutation: I1 Refresh LockInval Refresh Ib I1 Ic UnlockInval
-step I1: INSERT INTO ts_continuous_test VALUES (1, 1);
+starting permutation: Refresh SV1 LockMatInval Refresh1 Ib I1 LockInvalThrEx Ic UnlockMatInval UnlockInvalThrEx SV1
 INFO:  new materialization range for public.ts_continuous_test (time column time) (15)
 INFO:  materializing continuous aggregate public.continuous_view: new range up to 15
 step Refresh: REFRESH MATERIALIZED VIEW continuous_view;
-step LockInval: BEGIN; LOCK TABLE _timescaledb_catalog.continuous_aggs_hypertable_invalidation_log;
-INFO:  new materialization range not found for public.ts_continuous_test (time column time): not enough new data past completion threshold (15)
-INFO:  materializing continuous aggregate public.continuous_view: no new range to materialize
-step Refresh: REFRESH MATERIALIZED VIEW continuous_view; <waiting ...>
-step Ib: BEGIN; SET LOCAL lock_timeout = '50ms'; SET LOCAL deadlock_timeout = '10ms';
-step I1: INSERT INTO ts_continuous_test VALUES (1, 1);
-step Ic: COMMIT; <waiting ...>
-step UnlockInval: ROLLBACK;
-INFO:  materializing continuous aggregate public.continuous_view: no new range to materialize or invalidations found, exiting early
-step Refresh: <... completed>
-step Ic: <... completed>
+step SV1: SELECT * FROM continuous_view order by 1;
+time_bucket    count          
 
-starting permutation: I1 Refresh LockInval Ib I1 Refresh Ic UnlockInval
-step I1: INSERT INTO ts_continuous_test VALUES (1, 1);
-INFO:  new materialization range for public.ts_continuous_test (time column time) (15)
-INFO:  materializing continuous aggregate public.continuous_view: new range up to 15
-step Refresh: REFRESH MATERIALIZED VIEW continuous_view;
-step LockInval: BEGIN; LOCK TABLE _timescaledb_catalog.continuous_aggs_hypertable_invalidation_log;
-step Ib: BEGIN; SET LOCAL lock_timeout = '50ms'; SET LOCAL deadlock_timeout = '10ms';
-step I1: INSERT INTO ts_continuous_test VALUES (1, 1);
+0              5              
+5              5              
+10             5              
+step LockMatInval: BEGIN; LOCK TABLE _timescaledb_catalog.continuous_aggs_materialization_invalidation_log;
 INFO:  new materialization range not found for public.ts_continuous_test (time column time): not enough new data past completion threshold (15)
 INFO:  materializing continuous aggregate public.continuous_view: no new range to materialize
-step Refresh: REFRESH MATERIALIZED VIEW continuous_view; <waiting ...>
+step Refresh1: REFRESH MATERIALIZED VIEW continuous_view; <waiting ...>
+step Ib: BEGIN; SET LOCAL lock_timeout = '50ms'; SET LOCAL deadlock_timeout = '10ms';
+step I1: INSERT INTO ts_continuous_test VALUES (1, 1);
+step LockInvalThrEx: BEGIN; LOCK TABLE _timescaledb_catalog.continuous_aggs_invalidation_threshold ;
 step Ic: COMMIT; <waiting ...>
-step UnlockInval: ROLLBACK;
+step UnlockMatInval: ROLLBACK;
 INFO:  materializing continuous aggregate public.continuous_view: no new range to materialize or invalidations found, exiting early
-step Refresh: <... completed>
+step Refresh1: <... completed>
+step UnlockInvalThrEx: ROLLBACK;
 step Ic: <... completed>
+step SV1: SELECT * FROM continuous_view order by 1;
+time_bucket    count          
+
+0              5              
+5              5              
+10             5              
 
 starting permutation: I1 Refresh LockInval Refresh Sb S1 Sc UnlockInval
 step I1: INSERT INTO ts_continuous_test VALUES (1, 1);
diff --git a/tsl/test/isolation/specs/continuous_aggs_insert.spec b/tsl/test/isolation/specs/continuous_aggs_insert.spec
index 6864bc8b8..34c75e99a 100644
--- a/tsl/test/isolation/specs/continuous_aggs_insert.spec
+++ b/tsl/test/isolation/specs/continuous_aggs_insert.spec
@@ -32,9 +32,15 @@ step "Sb"	{ BEGIN; SET LOCAL lock_timeout = '50ms'; SET LOCAL deadlock_timeout =
 step "S1"	{ SELECT count(*) FROM ts_continuous_test; }
 step "Sc"	{ COMMIT; }
 
+session "SV"
+step "SV1"	{ SELECT * FROM continuous_view order by 1; }
+
 session "R"
 step "Refresh"	{ REFRESH MATERIALIZED VIEW continuous_view; }
 
+session "R1"
+step "Refresh1"	{ REFRESH MATERIALIZED VIEW continuous_view; }
+
 session "R2"
 setup { SET lock_timeout = '50ms'; SET deadlock_timeout = '10ms';  }
 step "Refresh2"	{ REFRESH MATERIALIZED VIEW continuous_view; }
@@ -46,16 +52,25 @@ step "LockInval" { BEGIN; LOCK TABLE _timescaledb_catalog.continuous_aggs_hypert
 step "UnlockInval" { ROLLBACK; }
 
 # the invalidation threshold lock will block both INSERT and REFRESH
-session "L"
+session "LI"
 step "LockInvalThr" { BEGIN; LOCK TABLE _timescaledb_catalog.continuous_aggs_invalidation_threshold IN SHARE MODE; }
 step "UnlockInvalThr" { ROLLBACK; }
 
+# the invalidation threshold lock will block both INSERT and REFRESH
+session "LIE"
+step "LockInvalThrEx" { BEGIN; LOCK TABLE _timescaledb_catalog.continuous_aggs_invalidation_threshold ; }
+step "UnlockInvalThrEx" { ROLLBACK; }
+
 #the completed threshold will block the REFRESH in the second materialization
 # txn , but not the INSERT
 session "LC"
 step "LockCompleted" { BEGIN; LOCK TABLE _timescaledb_catalog.continuous_aggs_completed_threshold; }
 step "UnlockCompleted" { ROLLBACK; }
 
+# the materialization invalidation log
+session "LM"
+step "LockMatInval" { BEGIN; LOCK TABLE _timescaledb_catalog.continuous_aggs_materialization_invalidation_log; }
+step "UnlockMatInval" { ROLLBACK; }
 #only one refresh
 permutation "LockCompleted" "Refresh2" "Refresh"  "UnlockCompleted"
 
@@ -81,7 +96,7 @@ permutation "Ipb" "LockInval" "Ip1" "Ipc" "Refresh" "UnlockInval"
 
 
 #refresh and insert/select do not block each other
-permutation "I1" "Refresh" "LockInval" "Refresh" "Ib" "I1" "Ic" "UnlockInval"
-permutation "I1" "Refresh" "LockInval" "Ib" "I1" "Refresh" "Ic" "UnlockInval"
+#refresh1 is blocked on LockMatInval , insert is blocked on invalidation threshold. so refresh1 does not see the insert from I1
+permutation "Refresh" "SV1" "LockMatInval" "Refresh1" "Ib" "I1" "LockInvalThrEx" "Ic" "UnlockMatInval" "UnlockInvalThrEx" "SV1"
 permutation "I1" "Refresh" "LockInval" "Refresh" "Sb" "S1" "Sc" "UnlockInval"
 permutation "I1" "Refresh" "LockInval" "Sb" "S1" "Refresh" "Sc" "UnlockInval"