diff --git a/src/test/isolation/specs/fk-deadlock.spec b/src/test/isolation/specs/fk-deadlock.spec
index b533d77e0bc8524ec24cac3ec63c481d48a9fed6..9f46c6b665c4adcb1c38f5124722668a0c527cfa 100644
--- a/src/test/isolation/specs/fk-deadlock.spec
+++ b/src/test/isolation/specs/fk-deadlock.spec
@@ -19,7 +19,7 @@ teardown
 }
 
 session "s1"
-setup		{ BEGIN; SET deadlock_timeout = '20ms'; }
+setup		{ BEGIN; SET deadlock_timeout = '100ms'; }
 step "s1i"	{ INSERT INTO child VALUES (1, 1); }
 step "s1u"	{ UPDATE parent SET aux = 'bar'; }
 step "s1c"	{ COMMIT; }
diff --git a/src/test/isolation/specs/fk-deadlock2.spec b/src/test/isolation/specs/fk-deadlock2.spec
index 5653628cf7c4d6a0d8fe98a4644710ae8b268c54..a8f1516c4ec10cbcff052a61fc9527f4e0040f6c 100644
--- a/src/test/isolation/specs/fk-deadlock2.spec
+++ b/src/test/isolation/specs/fk-deadlock2.spec
@@ -24,7 +24,7 @@ teardown
 }
 
 session "s1"
-setup		{ BEGIN; SET deadlock_timeout = '20ms'; }
+setup		{ BEGIN; SET deadlock_timeout = '100ms'; }
 step "s1u1"	{ UPDATE A SET Col1 = 1 WHERE AID = 1; }
 step "s1u2"	{ UPDATE B SET Col2 = 1 WHERE BID = 2; }
 step "s1c"	{ COMMIT; }