diff --git a/test/known_failures_Linux.json b/test/known_failures_Linux.json
index c961988..754535f 100644
--- a/test/known_failures_Linux.json
+++ b/test/known_failures_Linux.json
@@ -229,6 +229,8 @@
   "go-java_json_http-ip",
   "go-java_json_http-ip-ssl",
   "go-nodejs_json_framed-ip",
+  "hs-csharp_binary_framed-ip",
+  "hs-csharp_compact_framed-ip",
   "hs-dart_binary_framed-ip",
   "hs-dart_compact_framed-ip",
   "hs-dart_json_framed-ip",
@@ -331,4 +333,4 @@
   "rs-dart_compact_framed-ip",
   "rs-dart_multi-binary_framed-ip",
   "rs-dart_multic-compact_framed-ip"
-]
\ No newline at end of file
+]