diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..b05ce1a
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,21 @@
+# Voter Stake Registry Changelog
+
+## v0.2.1 - 2022-4-3
+
+### Program
+- Increase the maximum number of lockup periods to 200 * 365 to allow for 200-year cliff and
+  constant lockups.
+- Add a function to compute the guaranteed locked vote power bonus. This is unused by the
+  program itself, but helpful for programs that want to provide benefits based on a user's
+  lockup amount and time.
+
+### Other
+- Add cli tool to decode voter accounts.
+- Update dependencies.
+
+
+## v0.2.0 - 2022-2-14
+
+- First release.
+- Available on devnet at 4Q6WW2ouZ6V3iaNm56MTd5n2tnTm4C5fiH8miFHnAFHo
+- In use by the Mango DAO on mainnet at the same address.
diff --git a/Cargo.lock b/Cargo.lock
index 65cb3cc..21a4605 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3308,7 +3308,7 @@ checksum = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
 
 [[package]]
 name = "voter-stake-registry"
-version = "0.2.0"
+version = "0.2.1"
 dependencies = [
  "anchor-lang",
  "anchor-spl",
@@ -3331,7 +3331,7 @@ dependencies = [
 
 [[package]]
 name = "voter-stake-registry-cli"
-version = "0.2.0"
+version = "0.2.1"
 dependencies = [
  "anchor-lang",
  "anyhow",
diff --git a/cli/Cargo.toml b/cli/Cargo.toml
index 35c0055..4b5a643 100644
--- a/cli/Cargo.toml
+++ b/cli/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "voter-stake-registry-cli"
-version = "0.2.0"
+version = "0.2.1"
 edition = "2021"
 
 [dependencies]
diff --git a/package.json b/package.json
index 45e437b..c54be89 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@blockworks-foundation/voter-stake-registry-client",
-  "version": "0.2.0",
+  "version": "0.2.1",
   "description": "Client for Voter-stake-registry which is a voter weight addin for Solana's spl-governance program.",
   "main": "lib/src/index.js",
   "types": "lib/src/index.d.ts",
diff --git a/programs/voter-stake-registry/Cargo.toml b/programs/voter-stake-registry/Cargo.toml
index f5b562a..2f8118b 100644
--- a/programs/voter-stake-registry/Cargo.toml
+++ b/programs/voter-stake-registry/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "voter-stake-registry"
-version = "0.2.0"
+version = "0.2.1"
 description = "Created with Anchor"
 edition = "2018"
 
diff --git a/src/voter_stake_registry.ts b/src/voter_stake_registry.ts
index 370763e..41ad715 100644
--- a/src/voter_stake_registry.ts
+++ b/src/voter_stake_registry.ts
@@ -1,5 +1,5 @@
 export type VoterStakeRegistry = {
-  "version": "0.2.0",
+  "version": "0.2.1",
   "name": "voter_stake_registry",
   "instructions": [
     {
@@ -1280,12 +1280,17 @@ export type VoterStakeRegistry = {
       "code": 6036,
       "name": "VaultTokenNonZero",
       "msg": ""
+    },
+    {
+      "code": 6037,
+      "name": "InvalidTimestampArguments",
+      "msg": ""
     }
   ]
 };
 
 export const IDL: VoterStakeRegistry = {
-  "version": "0.2.0",
+  "version": "0.2.1",
   "name": "voter_stake_registry",
   "instructions": [
     {
@@ -2566,6 +2571,11 @@ export const IDL: VoterStakeRegistry = {
       "code": 6036,
       "name": "VaultTokenNonZero",
       "msg": ""
+    },
+    {
+      "code": 6037,
+      "name": "InvalidTimestampArguments",
+      "msg": ""
     }
   ]
 };