diff --git a/CHANGES b/CHANGES
index 646fdf050..0e0a7bba8 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,14 @@
+## 0.21.0
+
+      * Update MSRV to 1.54.0
+      * Update clap to 3.1.
+      * Update heck to 0.4.0
+      * unraw identifiers
+      * Honor documentation_length in Cython.
+      * Add documentation_style to with short and full options
+      * Map RawFd to Int
+      * Respect remove_underscores config when prefixing name to enum
+
 ## 0.20.0
 
      * Add Builder::with_using_namespaces. (#688)
diff --git a/Cargo.lock b/Cargo.lock
index ed328c4fa..7a1f1b6d6 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -27,7 +27,7 @@ checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
 
 [[package]]
 name = "cbindgen"
-version = "0.20.0"
+version = "0.21.0"
 dependencies = [
  "clap",
  "heck",
diff --git a/Cargo.toml b/Cargo.toml
index 82bc81070..49fb036b5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "cbindgen"
-version = "0.20.0"
+version = "0.21.0"
 authors = [
   "Emilio Cobos Álvarez <emilio@crisal.io>",
   "Jeff Muizelaar <jmuizelaar@mozilla.com>",