diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,12 @@
+## Path IO 1.2.2
+
+* Fixed a bug in `setModificationTime` function that previously called
+  `setAccessTime` instead of `setModificationTime` from `directory`.
+
+* Added notes to all pieces of API that are conditional (some functions are
+  only available if `directory-1.2.3.0` or later is used, now it's mentioned
+  for every such function explicitely).
+
 ## Path IO 1.2.1
 
 * Allowed `directory-1.3.0.0`.
diff --git a/Path/IO.hs b/Path/IO.hs
--- a/Path/IO.hs
+++ b/Path/IO.hs
@@ -1278,6 +1278,9 @@
 -- Caveat for POSIX systems: This function returns a timestamp with
 -- sub-second resolution only if this package is compiled against
 -- @unix-2.6.0.0@ or later and the underlying filesystem supports them.
+--
+-- Note: this is a piece of conditional API, only available if
+-- @directory-1.2.3.0@ or later is used.
 
 getAccessTime :: MonadIO m => Path b t -> m UTCTime
 getAccessTime = liftD D.getAccessTime
@@ -1304,6 +1307,9 @@
 --   function would not be able to set timestamps with sub-second
 --   resolution. In this case, there would also be loss of precision in the
 --   modification time.
+--
+-- Note: this is a piece of conditional API, only available if
+-- @directory-1.2.3.0@ or later is used.
 
 setAccessTime :: MonadIO m => Path b t -> UTCTime -> m ()
 setAccessTime = liftD2' D.setAccessTime
@@ -1330,9 +1336,12 @@
 --   function would not be able to set timestamps with sub-second
 --   resolution. In this case, there would also be loss of precision in the
 --   access time.
+--
+-- Note: this is a piece of conditional API, only available if
+-- @directory-1.2.3.0@ or later is used.
 
 setModificationTime :: MonadIO m => Path b t -> UTCTime -> m ()
-setModificationTime = liftD2' D.setAccessTime
+setModificationTime = liftD2' D.setModificationTime
 {-# INLINE setModificationTime #-}
 #endif
 
diff --git a/path-io.cabal b/path-io.cabal
--- a/path-io.cabal
+++ b/path-io.cabal
@@ -31,7 +31,7 @@
 -- POSSIBILITY OF SUCH DAMAGE.
 
 name:                 path-io
-version:              1.2.1
+version:              1.2.2
 cabal-version:        >= 1.10
 license:              BSD3
 license-file:         LICENSE.md
@@ -81,7 +81,7 @@
                     , exceptions   >= 0.8     && < 0.9
                     , hspec        >= 2.0     && < 3.0
                     , path         >= 0.5     && < 0.6
-                    , path-io      >= 1.2.1
+                    , path-io      >= 1.2.2
                     , unix-compat
   default-language:   Haskell2010