diff --git a/README.md b/README.md
index b6c70d5..39916f4 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,10 @@
 ![catch logo](catch-logo-small.png)
 
-*v1.8.0*
+*v1.8.1*
 
 Build status (on Travis CI) [![Build Status](https://travis-ci.org/philsquared/Catch.svg?branch=master)](https://travis-ci.org/philsquared/Catch)
 
-<a href="https://github.com/philsquared/Catch/releases/download/v1.8.0/catch.hpp">The latest, single header, version can be downloaded directly using this link</a>
+<a href="https://github.com/philsquared/Catch/releases/download/v1.8.1/catch.hpp">The latest, single header, version can be downloaded directly using this link</a>
 
 ## What's the Catch?
 
diff --git a/include/internal/catch_version.hpp b/include/internal/catch_version.hpp
index 3c3593f..c364d7d 100644
--- a/include/internal/catch_version.hpp
+++ b/include/internal/catch_version.hpp
@@ -37,7 +37,7 @@ namespace Catch {
         return os;
     }
 
-    Version libraryVersion( 1, 8, 0, "", 0 );
+    Version libraryVersion( 1, 8, 1, "", 0 );
 
 }
 
diff --git a/single_include/catch.hpp b/single_include/catch.hpp
index abba838..6f9334b 100644
--- a/single_include/catch.hpp
+++ b/single_include/catch.hpp
@@ -1,6 +1,6 @@
 /*
- *  Catch v1.8.0
- *  Generated: 2017-02-28 14:16:45.289179
+ *  Catch v1.8.1
+ *  Generated: 2017-03-01 16:04:19.016511
  *  ----------------------------------------------------------
  *  This file has been merged from multiple headers. Please don't edit it directly
  *  Copyright (c) 2012 Two Blue Cubes Ltd. All rights reserved.
@@ -141,6 +141,10 @@
 #       define CATCH_INTERNAL_CONFIG_NO_POSIX_SIGNALS
 #   endif
 
+// Required for some versions of Cygwin to declare gettimeofday
+// see: http://stackoverflow.com/questions/36901803/gettimeofday-not-declared-in-this-scope-cygwin
+#   define _BSD_SOURCE
+
 #endif // __CYGWIN__
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -8134,7 +8138,7 @@ namespace Catch {
         return os;
     }
 
-    Version libraryVersion( 1, 8, 0, "", 0 );
+    Version libraryVersion( 1, 8, 1, "", 0 );
 
 }
 
@@ -8308,13 +8312,8 @@ namespace Catch
 
 #else
 
-// Required for some versions of Cygwin to declare gettimeofday
-// see: http://stackoverflow.com/questions/36901803/gettimeofday-not-declared-in-this-scope-cygwin
-#   ifdef __CYGWIN__
-#       define _BSD_SOURCE
-#   endif
-
 #include <sys/time.h>
+
 #endif
 
 namespace Catch {