diff --git a/CHANGELOG.markdown b/CHANGELOG.markdown
--- a/CHANGELOG.markdown
+++ b/CHANGELOG.markdown
@@ -7,6 +7,23 @@
 *de facto* standard Haskell versioning scheme.
 
 
+1.0.0.1
+-------
+
+- **Date**    2017-01-19
+- **Git tag** [dejafu-1.0.0.1][]
+- **Hackage** https://hackage.haskell.org/package/dejafu-1.0.0.1
+
+### Miscellaneous
+
+- The upper bound on concurrency was bumped to <1.5.
+
+[dejafu-1.0.0.1]: https://github.com/barrucadu/dejafu/releases/tag/dejafu-1.0.0.1
+
+
+---------------------------------------------------------------------------------------------------
+
+
 1.0.0.0
 -------
 
diff --git a/dejafu.cabal b/dejafu.cabal
--- a/dejafu.cabal
+++ b/dejafu.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                dejafu
-version:             1.0.0.0
+version:             1.0.0.1
 synopsis:            A library for unit-testing concurrent programs.
 
 description:
@@ -33,7 +33,7 @@
 source-repository this
   type:     git
   location: https://github.com/barrucadu/dejafu.git
-  tag:      dejafu-1.0.0.0
+  tag:      dejafu-1.0.0.1
 
 library
   exposed-modules:     Test.DejaFu
@@ -57,7 +57,7 @@
   -- other-modules:       
   -- other-extensions:    
   build-depends:       base              >=4.8 && <5
-                     , concurrency       >=1.3 && <1.4
+                     , concurrency       >=1.3 && <1.5
                      , containers        >=0.5 && <0.6
                      , deepseq           >=1.1 && <2
                      , exceptions        >=0.7 && <0.9