diff --git a/tools/interop_matrix/client_matrix.py b/tools/interop_matrix/client_matrix.py
index b17f6048a28..c91f3109520 100644
--- a/tools/interop_matrix/client_matrix.py
+++ b/tools/interop_matrix/client_matrix.py
@@ -305,11 +305,8 @@ LANG_RELEASE_MATRIX = {
             ("v1.62.2", ReleaseInfo(runtimes=["go1.19"])),
             ("v1.63.3", ReleaseInfo()),
             ("v1.64.1", ReleaseInfo()),
-            ("v1.65.0", ReleaseInfo()),
             ("v1.65.1", ReleaseInfo()),
-            ("v1.66.2", ReleaseInfo()),
             ("v1.66.3", ReleaseInfo()),
-            ("v1.67.0", ReleaseInfo()),
             ("v1.67.1", ReleaseInfo()),
             ("v1.68.0", ReleaseInfo()),
         ]