diff --git a/Questions.md b/Questions.md
index 7a86c6d..4b2bf0f 100644
--- a/Questions.md
+++ b/Questions.md
@@ -56,4 +56,5 @@
 7. [Next Greater Element I](https://leetcode.com/problems/next-greater-element-i/description/) `Striver`
 8. [LFU Cache](https://leetcode.com/problems/lfu-cache/description/) `Striver`
 9. [Largest Rectangle in Histogram](https://leetcode.com/problems/largest-rectangle-in-histogram/description/) `Striver`
-10. [Sliding Window Maximun](https://leetcode.com/problems/sliding-window-maximum/description/) `Striver`
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+10. [Sliding Window Maximun](https://leetcode.com/problems/sliding-window-maximum/description/) `Striver`
+11. [Online Stock Span](https://leetcode.com/problems/online-stock-span/description/)``Striver`
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