diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index 71df13634..7efc04092 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -216,3 +216,8 @@ In chronological order:
   
 * Pablo Romero <https://github.com/pablorcum>
   * [2022-08] Fix building from sources for QNX
+
+* Mark Seminatore <https://github.com/mseminatore>
+  * [2023-06-23] Fix bounds issue in goto_set_num_threads
+  * [2023-06-23] Improve Windows threading performance scaling
+  
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