diff --git a/CHANGELOG.md b/CHANGELOG.md
index a7ecb32..ed15373 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,22 +1,32 @@
 # Changelog
 
+# 0.4.0
+
+## Changed
+
+Rename crate from `pow_sha256` to `mcaptcha_pow_sha256`
+
 ## 0.2.1
 
 ### Changed
-- performance improvement: internally `get_difficulty` was being called
-  multiple times while generating `PoW`, now it calls only once.
+
+-   performance improvement: internally `get_difficulty` was being called
+    multiple times while generating `PoW`, now it calls only once.
 
 ### Fixed
-- encoding and decoding configuration used internally was causing an
-  error in `PoW` computation
+
+-   encoding and decoding configuration used internally was causing an
+    error in `PoW` computation
 
 ## 0.2.0
 
 ### Changed
-- Difficulty factor is now an unsigned 32 bit number
+
+-   Difficulty factor is now an unsigned 32 bit number
 
 ## 0.1
 
 ### Added:
-- PoW constructor
-- unique salt
+
+-   PoW constructor
+-   unique salt
diff --git a/Cargo.lock b/Cargo.lock
index c190e50..5254af4 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -157,7 +157,7 @@ checksum = "a08173bc88b7955d1b3145aa561539096c421ac8debde8cbc3612ec635fee29b"
 
 [[package]]
 name = "mcaptcha_pow_sha256"
-version = "0.3.1"
+version = "0.4.0"
 dependencies = [
  "bincode",
  "derive_builder",
diff --git a/Cargo.toml b/Cargo.toml
index cfe299f..a470965 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "mcaptcha_pow_sha256"
-version = "0.3.1"
+version = "0.4.0"
 authors = [ "Aravinth Manivannan <realaravinth@bastsense.net>", "Robert Kornacki <robk@syre.io>"]
 description = """
 SHA256 PoW on any serializable datatype used in mCaptcha