diff --git a/Readme.md b/Readme.md
index 91fdf5b..1c6b672 100644
--- a/Readme.md
+++ b/Readme.md
@@ -11,7 +11,7 @@ Use the [Nimble][2] package manager to add asynctest to an existing project.
 Add the following to its .nimble file:
 
 ```nim
-requires "asynctest >= 0.4.3 & < 0.5.0"
+requires "asynctest >= 0.5.0 & < 0.6.0"
 ```
 
 Usage
diff --git a/asynctest.nimble b/asynctest.nimble
index 1709223..bb05368 100644
--- a/asynctest.nimble
+++ b/asynctest.nimble
@@ -1,4 +1,4 @@
-version = "0.4.3"
+version = "0.5.0"
 author = "asynctest Authors"
 description = "Test asynchronous code"
 license = "MIT"