diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index 6d18047fb..738475a93 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -183,4 +183,6 @@ In chronological order:
 
 * Rajalakshmi Srinivasaraghavan <https://github.com/RajalakshmiSR>
   * [2020-04-15] Half-precision GEMM for bfloat16
-  
+
+* Marius Hillenbrand <https://github.com/mhillenibm>
+  * [2020-05-12] Revise dynamic architecture detection for IBM z