diff --git a/README.md b/README.md
index d57498e..62b9d5a 100644
--- a/README.md
+++ b/README.md
@@ -589,6 +589,12 @@ to the expected behavior.
 
 ## Release Notes
 
+### v1.5.15 (wip)
+
+* Fix for [#166](https://github.com/gulrak/filesystem/issues/166),
+  `extension()` did return non empty result for the directory name
+  `".."`
+
 ###  [v1.5.14](https://github.com/gulrak/filesystem/releases/tag/v1.5.14)
 
 * Pull request [#163](https://github.com/gulrak/filesystem/pull/163), build
diff --git a/include/ghc/filesystem.hpp b/include/ghc/filesystem.hpp
index 8e4573a..bbb1023 100644
--- a/include/ghc/filesystem.hpp
+++ b/include/ghc/filesystem.hpp
@@ -308,7 +308,7 @@
 //- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 
 // ghc::filesystem version in decimal (major * 10000 + minor * 100 + patch)
-#define GHC_FILESYSTEM_VERSION 10514L
+#define GHC_FILESYSTEM_VERSION 10515L
 
 #if !defined(GHC_WITH_EXCEPTIONS) && (defined(__EXCEPTIONS) || defined(__cpp_exceptions) || defined(_CPPUNWIND))
 #define GHC_WITH_EXCEPTIONS