diff --git a/.waf-tools/websocket.py b/.waf-tools/websocket.py
index f8d2e33..5ee5d6c 100644
--- a/.waf-tools/websocket.py
+++ b/.waf-tools/websocket.py
@@ -36,8 +36,8 @@
 
         # Looking for the following:
         # static int const major_version = 0;
-        # static int const minor_version = 3;
-        # static int const patch_version = 0;
+        # static int const minor_version = 5;
+        # static int const patch_version = 1;
 
         version = [None, None, None]
 
@@ -71,7 +71,7 @@
             Logs.warn('    git submodule init && git submodule update')
             Logs.warn('Otherwise, manually download and extract websocketpp library:')
             Logs.warn('    mkdir websocketpp')
-            Logs.warn('    curl -L https://github.com/zaphoyd/websocketpp/tarball/4309749dd98937b8a7be5dc0bfe679ba201c5512 > websocket.tar.gz')
+            Logs.warn('    curl -L https://github.com/zaphoyd/websocketpp/archive/0.5.1.tar.gz > websocket.tar.gz')
             Logs.warn('    tar zxf websocket.tar.gz -C websocketpp/ --strip 1')
             Logs.warn('Alternatively, WebSocket support can be disabled with --without-websocket')
             self.fatal("The configuration failed")
diff --git a/websocketpp b/websocketpp
index 4309749..ac5d7ea 160000
--- a/websocketpp
+++ b/websocketpp
@@ -1 +1 @@
-Subproject commit 4309749dd98937b8a7be5dc0bfe679ba201c5512
+Subproject commit ac5d7ea5af9734de965688b54a7860259887b537