diff --git a/CHANGELOG b/CHANGELOG
index f36d2c3ab75..a1472301e27 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,27 @@
+# CBMC 6.4.0
+
+This release improves upon automated assigns-clause inference for loop invariants, which should make manually adding assigns clauses to loops less frequent.
+
+## What's Changed
+* [CONTRACTS] Support alias of member pointers in loop assigns inference by @qinheping in https://github.com/diffblue/cbmc/pull/8486
+* [CONTRACTS] Detect loop locals with goto_rw in DFCC by @qinheping in https://github.com/diffblue/cbmc/pull/8489
+* [CONTRACTS] DFCC loop assigns infererence with functions inlined by @qinheping in https://github.com/diffblue/cbmc/pull/8490
+
+## Bug Fixes
+* SMT2: implement range type by @kroening in https://github.com/diffblue/cbmc/pull/8466
+* Man pages: improve wording of unwinding-related options by @tautschnig in https://github.com/diffblue/cbmc/pull/8471
+* `format_type` can now format `range_typet` by @kroening in https://github.com/diffblue/cbmc/pull/8473
+* Contracts: document use of __CPROVER_loop_entry with arrays by @tautschnig in https://github.com/diffblue/cbmc/pull/8470
+* `bitvector_typet`: set width from mp_integer by @kroening in https://github.com/diffblue/cbmc/pull/8477
+* CI: add macos-14 (macOS on M1) job by @tautschnig in https://github.com/diffblue/cbmc/pull/8382
+* Remove macos-12 CI job by @tautschnig in https://github.com/diffblue/cbmc/pull/8482
+* [CONTRACTS] Support alias of member pointers in loop assigns inference by @qinheping in https://github.com/diffblue/cbmc/pull/8486
+* zero extension expression by @kroening in https://github.com/diffblue/cbmc/pull/8442
+* [CONTRACTS] Detect loop locals with goto_rw in DFCC by @qinheping in https://github.com/diffblue/cbmc/pull/8489
+* [CONTRACTS] DFCC loop assigns infererence with functions inlined by @qinheping in https://github.com/diffblue/cbmc/pull/8490
+
+**Full Changelog**: https://github.com/diffblue/cbmc/compare/cbmc-6.3.1...cbmc-6.4.0
+
 # CBMC 6.3.1
 
 This patch release addresses build failures on Apple Silicon (via PR #8461).
diff --git a/src/config.inc b/src/config.inc
index 9125a0a0e9e..85c87c9e7ab 100644
--- a/src/config.inc
+++ b/src/config.inc
@@ -79,7 +79,7 @@ endif
 OSX_IDENTITY="Developer ID Application: Daniel Kroening"
 
 # Detailed version information
-CBMC_VERSION = 6.3.1
+CBMC_VERSION = 6.4.0
 
 # Use the CUDD library for BDDs, can be installed using `make -C src cudd-download`
 # CUDD = ../../cudd-3.0.0
diff --git a/src/libcprover-rust/Cargo.toml b/src/libcprover-rust/Cargo.toml
index bb7bd8caf90..6d2ccddc3b2 100644
--- a/src/libcprover-rust/Cargo.toml
+++ b/src/libcprover-rust/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "libcprover_rust"
-version = "6.3.1"
+version = "6.4.0"
 edition = "2021"
 description = "Rust API for CBMC and assorted CProver tools"
 repository = "https://github.com/diffblue/cbmc"