v0.38.7 (#2908)

[CHANGELOG](https://github.com/cometbft/cometbft/blob/2cece8aba32a6ec8fea6a66aa540f290a561d869/CHANGELOG.md#v0387)
cometbft · Apr 27, 2024 · 1b1216c · 1b1216c
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diff --git a/...2225-fix-checktx-request-returns-error.md → ...2225-fix-checktx-request-returns-error.md b/...2225-fix-checktx-request-returns-error.md → ...2225-fix-checktx-request-returns-error.md
diff --git a/...bug-fixes/2774-bitarray-unmarshal-json.md → ...bug-fixes/2774-bitarray-unmarshal-json.md b/...bug-fixes/2774-bitarray-unmarshal-json.md → ...bug-fixes/2774-bitarray-unmarshal-json.md
diff --git a/.changelog/v0.38.7/features/2793-boostrap.md b/.changelog/v0.38.7/features/2793-boostrap.md
@@ -0,0 +1,2 @@
+- [`node`] Add `BootstrapStateWithGenProvider` to boostrap state using a custom
+  genesis doc provider ([\#2793](https://github.com/cometbft/cometbft/pull/2793))
diff --git a/...ts/2839-tx_index-lower-heap-allocation.md → ...ts/2839-tx_index-lower-heap-allocation.md b/...ts/2839-tx_index-lower-heap-allocation.md → ...ts/2839-tx_index-lower-heap-allocation.md
diff --git a/...ovements/2841-speedup-bits-pick-random.md → ...ovements/2841-speedup-bits-pick-random.md b/...ovements/2841-speedup-bits-pick-random.md → ...ovements/2841-speedup-bits-pick-random.md
diff --git a/...mprovements/2846-speedup-json-encoding.md → ...mprovements/2846-speedup-json-encoding.md b/...mprovements/2846-speedup-json-encoding.md → ...mprovements/2846-speedup-json-encoding.md
diff --git a/.changelog/v0.38.7/summary.md b/.changelog/v0.38.7/summary.md
@@ -0,0 +1,3 @@
+*April 26, 2024*
+
+This release contains a few bug fixes and performance improvements.
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,5 +1,32 @@
 # CHANGELOG
 
+## v0.38.7
+
+*April 26, 2024*
+
+This release contains a few bug fixes and performance improvements.
+
+### BUG FIXES
+
+- [`mempool`] Panic when a CheckTx request to the app returns an error
+  ([\#2225](https://github.com/cometbft/cometbft/pull/2225))
+- [`bits`] prevent `BitArray.UnmarshalJSON` from crashing on 0 bits
+  ([\#2774](https://github.com/cometbft/cometbft/pull/2774))
+
+### FEATURES
+
+- [`node`] Add `BootstrapStateWithGenProvider` to boostrap state using a custom
+  genesis doc provider ([\#2793](https://github.com/cometbft/cometbft/pull/2793))
+
+### IMPROVEMENTS
+
+- `[state/indexer]` Lower the heap allocation of transaction searches
+  ([\#2839](https://github.com/cometbft/cometbft/pull/2839))
+- `[internal/bits]` 10x speedup and remove heap overhead of bitArray.PickRandom (used extensively in consensus gossip)
+  ([\#2841](https://github.com/cometbft/cometbft/pull/2841)).
+- `[libs/json]` Lower the memory overhead of JSON encoding by using JSON encoders internally
+  ([\#2846](https://github.com/cometbft/cometbft/pull/2846)).
+
 ## v0.38.6
 
 *March 12, 2024*
@@ -375,6 +402,11 @@ See below for more details.
   ([\#230](https://github.com/cometbft/cometbft/pull/230))
 - Bump minimum Go version to 1.20
   ([\#385](https://github.com/cometbft/cometbft/issues/385))
+- [config] The boolean key `fastsync` is deprecated and replaced by
+    `block_sync`. ([\#9259](https://github.com/tendermint/tendermint/pull/9259))
+    At the same time, `block_sync` is also deprecated. In the next release,
+    BlocSync will always be enabled and `block_sync` will be removed.
+    ([\#409](https://github.com/cometbft/cometbft/issues/409))
 - `[abci]` Make length delimiter encoding consistent
   (`uint64`) between ABCI and P2P wire-level protocols
   ([\#5783](https://github.com/tendermint/tendermint/pull/5783))

diff --git a/version/version.go b/version/version.go
@@ -3,7 +3,7 @@ package version
 const (
 	// TMVersionDefault is the used as the fallback version of CometBFT
 	// when not using git describe. It is formatted with semantic versioning.
-	TMCoreSemVer = "0.38.6"
+	TMCoreSemVer = "0.38.7"
 	// ABCISemVer is the semantic version of the ABCI protocol
 	ABCISemVer  = "2.0.0"
 	ABCIVersion = ABCISemVer