diff --git a/tools/interop_matrix/client_matrix.py b/tools/interop_matrix/client_matrix.py
index 110e29ce2f1..836485bdb69 100644
--- a/tools/interop_matrix/client_matrix.py
+++ b/tools/interop_matrix/client_matrix.py
@@ -430,7 +430,7 @@ LANG_RELEASE_MATRIX = {
             ("v1.56.0", ReleaseInfo()),
             ("v1.57.2", ReleaseInfo()),
             ("v1.58.0", ReleaseInfo()),
-            ("v1.59.0", ReleaseInfo()),
+            ("v1.59.1", ReleaseInfo()),
         ]
     ),
     "python": OrderedDict(