diff --git a/tools/interop_matrix/client_matrix.py b/tools/interop_matrix/client_matrix.py
index d6a704681a8..ff62004b730 100644
--- a/tools/interop_matrix/client_matrix.py
+++ b/tools/interop_matrix/client_matrix.py
@@ -172,6 +172,9 @@ LANG_RELEASE_MATRIX = {
         {
             'v1.12.0': None
         },
+        {
+            'v1.13.0': None
+        },
     ],
     'python': [
         {