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diff --git a/.changelog/v4.0.0/summary.md b/.changelog/v4.0.0/summary.md
new file mode 100644
index 0000000000..8a69aefd10
--- /dev/null
+++ b/.changelog/v4.0.0/summary.md
@@ -0,0 +1 @@
+*January 22, 2024*
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4129c4d26f..9d46f32447 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,59 @@
 # CHANGELOG
 
+## v4.0.0
+
+*January 22, 2024*
+
+### API BREAKING
+
+- [Consumer](x/ccv/consumer)
+  - Fix a bug in consmer genesis file transform CLI command.
+    ([\#1458](https://github.com/cosmos/interchain-security/pull/1458))
+
+### BUG FIXES
+
+- General
+  - Fix a bug in consmer genesis file transform CLI command.
+    ([\#1458](https://github.com/cosmos/interchain-security/pull/1458))
+  - Improve validation of IBC packet data and provider messages. Also,
+    enable the provider to validate consumer packets before handling them.
+    ([\#1460](https://github.com/cosmos/interchain-security/pull/1460))
+- [Consumer](x/ccv/consumer)
+  - Avoid jailing validators immediately once they can no longer opt-out from
+    validating consumer chains.
+    ([\#1549](https://github.com/cosmos/interchain-security/pull/1549))
+  - Fix the validation of VSCPackets to not fail due to marshaling to string using Bech32.
+    ([\#1570](https://github.com/cosmos/interchain-security/pull/1570))
+
+### DEPENDENCIES
+
+- Bump Golang to v1.21 
+  ([\#1557](https://github.com/cosmos/interchain-security/pull/1557))
+- Bump [cosmos-sdk](https://github.com/cosmos/cosmos-sdk) to
+  [v0.47.7](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.47.7).
+  ([\#1558](https://github.com/cosmos/interchain-security/pull/1558))
+- Bump [CometBFT](https://github.com/cometbft/cometbft) to
+  [v0.37.4](https://github.com/cometbft/cometbft/releases/tag/v0.37.4).
+  ([\#1558](https://github.com/cosmos/interchain-security/pull/1558))
+
+### FEATURES
+
+- [Provider](x/ccv/provider)
+  - Add the provider-side changes for jail throttling with retries (cf. ADR 008).
+    ([\#1321](https://github.com/cosmos/interchain-security/pull/1321))
+
+### STATE BREAKING
+
+- [Consumer](x/ccv/consumer)
+  - Avoid jailing validators immediately once they can no longer opt-out from
+    validating consumer chains.
+    ([\#1549](https://github.com/cosmos/interchain-security/pull/1549))
+  - Fix the validation of VSCPackets to not fail due to marshaling to string using Bech32.
+    ([\#1570](https://github.com/cosmos/interchain-security/pull/1570))
+- [Provider](x/ccv/provider)
+  - Add the provider-side changes for jail throttling with retries (cf. ADR 008).
+    ([\#1321](https://github.com/cosmos/interchain-security/pull/1321))
+
 ## v3.3.0
 
 *January 5, 2024*