diff --git a/TODO b/TODO
index 4448b0a..c518c26 100644
--- a/TODO
+++ b/TODO
@@ -63,4 +63,4 @@ Test262o:   0/11262 errors, 463 excluded
 Test262o commit: 7da91bceb9ce7613f87db47ddd1292a2dda58b42 (es5-tests branch)
 
 Test262:
-Result: 58/83574 errors, 3348 excluded, 6000 skipped
+Result: 58/83558 errors, 3356 excluded, 6000 skipped
diff --git a/test262.conf b/test262.conf
index 8fe86cc..af5cd64 100644
--- a/test262.conf
+++ b/test262.conf
@@ -300,5 +300,15 @@ test262/test/staging/sm/syntax/syntax-parsed-arrow-then-directive.js
 # returning "bound fn" as initialName for a function is permitted by the spec
 test262/test/staging/sm/Function/function-toString-builtin.js
 
+# very slow tests which only test DST offset caching (QuickJS does not optimize it)
+test262/test/staging/sm/Date/dst-offset-caching-1-of-8.js
+test262/test/staging/sm/Date/dst-offset-caching-2-of-8.js
+test262/test/staging/sm/Date/dst-offset-caching-3-of-8.js
+test262/test/staging/sm/Date/dst-offset-caching-4-of-8.js
+test262/test/staging/sm/Date/dst-offset-caching-5-of-8.js
+test262/test/staging/sm/Date/dst-offset-caching-6-of-8.js
+test262/test/staging/sm/Date/dst-offset-caching-7-of-8.js
+test262/test/staging/sm/Date/dst-offset-caching-8-of-8.js
+
 [tests]
 # list test files or use config.testdir