diff --git a/src/test/run-pass/sio-client.rs b/src/test/run-pass/sio-client.rs
index 847d04c8776a..c392e21896a5 100644
--- a/src/test/run-pass/sio-client.rs
+++ b/src/test/run-pass/sio-client.rs
@@ -1,3 +1,7 @@
+// xfail-stage1
+// xfail-stage2
+// xfail-stage3
+
 use std;
 import std::sio;
 import std::task;
diff --git a/src/test/run-pass/sio-ctx.rs b/src/test/run-pass/sio-ctx.rs
index 4cbc71016a64..7fa673105893 100644
--- a/src/test/run-pass/sio-ctx.rs
+++ b/src/test/run-pass/sio-ctx.rs
@@ -1,3 +1,7 @@
+// xfail-stage1
+// xfail-stage2
+// xfail-stage3
+
 use std;
 import std::sio;
 
diff --git a/src/test/run-pass/sio-read.rs b/src/test/run-pass/sio-read.rs
index a2fc95b2c1ab..1671aad2c050 100644
--- a/src/test/run-pass/sio-read.rs
+++ b/src/test/run-pass/sio-read.rs
@@ -1,3 +1,7 @@
+// xfail-stage1
+// xfail-stage2
+// xfail-stage3
+
 use std;
 import std::sio;
 import std::task;
diff --git a/src/test/run-pass/sio-srv.rs b/src/test/run-pass/sio-srv.rs
index 8a6fdccf484b..bf0d2d3c631c 100644
--- a/src/test/run-pass/sio-srv.rs
+++ b/src/test/run-pass/sio-srv.rs
@@ -1,3 +1,7 @@
+// xfail-stage1
+// xfail-stage2
+// xfail-stage3
+
 use std;
 import std::sio;
 
diff --git a/src/test/run-pass/sio-write.rs b/src/test/run-pass/sio-write.rs
index 1094db7885c2..c1a5b3493ae8 100644
--- a/src/test/run-pass/sio-write.rs
+++ b/src/test/run-pass/sio-write.rs
@@ -1,3 +1,7 @@
+// xfail-stage1
+// xfail-stage2
+// xfail-stage3
+
 use std;
 import std::sio;
 import std::task;