diff --git a/test/known_failures_Linux.json b/test/known_failures_Linux.json
index 4c78c52..3625fa9 100644
--- a/test/known_failures_Linux.json
+++ b/test/known_failures_Linux.json
@@ -88,6 +88,8 @@
   "hs-java_json_framed-ip",
   "hs-nodejs_json_buffered-ip",
   "hs-nodejs_json_framed-ip",
+  "hs-py3_json_buffered-ip",
+  "hs-py3_json_framed-ip",
   "hs-py_json_buffered-ip",
   "hs-py_json_framed-ip",
   "hs-rb_json_buffered-ip",
@@ -120,6 +122,14 @@
   "nodejs-java_compact_framed-ip",
   "nodejs-java_compact_framed-ip-ssl",
   "nodejs-java_json_buffered-ip-ssl",
+  "nodejs-py3_compact_buffered-ip",
+  "nodejs-py3_compact_buffered-ip-ssl",
+  "nodejs-py3_compact_framed-ip",
+  "nodejs-py3_compact_framed-ip-ssl",
+  "nodejs-py3_json_buffered-ip",
+  "nodejs-py3_json_buffered-ip-ssl",
+  "nodejs-py3_json_framed-ip",
+  "nodejs-py3_json_framed-ip-ssl",
   "nodejs-py_compact_buffered-ip",
   "nodejs-py_compact_buffered-ip-ssl",
   "nodejs-py_compact_framed-ip",
@@ -139,6 +149,10 @@
   "py-nodejs_json_buffered-ip-ssl",
   "py-nodejs_json_framed-ip",
   "py-nodejs_json_framed-ip-ssl",
+  "py3-hs_json_buffered-ip",
+  "py3-hs_json_framed-ip",
+  "py3-perl_binary_buffered-ip-ssl",
+  "py3-perl_binary_framed-ip-ssl",
   "rb-hs_json_buffered-ip",
   "rb-hs_json_framed-ip",
   "rb-nodejs_json_buffered-ip",