diff --git a/Cargo.lock b/Cargo.lock
index 4202d503..5acae398 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -230,7 +230,7 @@ checksum = "b700ce4376041dcd0a327fd0097c41095743c4c8af8887265942faf1100bd040"
 
 [[package]]
 name = "candid"
-version = "0.6.17"
+version = "0.6.18"
 dependencies = [
  "arbitrary",
  "byteorder",
@@ -260,7 +260,7 @@ dependencies = [
 
 [[package]]
 name = "candid_derive"
-version = "0.4.3"
+version = "0.4.4"
 dependencies = [
  "lazy_static",
  "proc-macro2 1.0.24",
diff --git a/Changelog.md b/Changelog.md
index 569ab408..b5c4e697 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,6 +1,20 @@
 
 # Changelog
 
+## 2021-03-17 
+
+### Rust (0.6.18)
+
+* `#[candid_method(init)]` to support init arguments in service actor
+* Subtyping check for Candid types
+* Handle subtyping for `reserved` and `int` in decoding
+
+### Other
+
+* Benchmark for Rust library with criterion
+* `didc check` and `didc subtype` command to check for subtyping
+* Conditional running CI for Coq or Rust library
+
 ## 2021-03-04 (Rust 0.6.17)
 
 * Support `serde_bytes` for efficient handling of `&[u8]` and `Vec<u8>`
diff --git a/rust/candid/Cargo.toml b/rust/candid/Cargo.toml
index 09bf3db6..0e080441 100644
--- a/rust/candid/Cargo.toml
+++ b/rust/candid/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "candid"
-version = "0.6.17"
+version = "0.6.18"
 edition = "2018"
 authors = ["DFINITY Team"]
 description = "Candid is an interface description language (IDL) for interacting with canisters running on the Internet Computer."
@@ -20,7 +20,7 @@ lalrpop = "0.19.0"
 
 [dependencies]
 byteorder = "1.3.4"
-candid_derive = { path = "../candid_derive", version = "=0.4.3" }
+candid_derive = { path = "../candid_derive", version = "=0.4.4" }
 codespan-reporting = "0.9.5"
 hex = "0.4.2"
 ic-types = "0.1.1"
@@ -50,6 +50,7 @@ criterion = "0.3"
 [[bench]]
 name = "benchmark"
 harness = false
+path = "benches/benchmark.rs"
 
 [features]
 cdk = ["candid_derive/cdk"]
diff --git a/rust/candid_derive/Cargo.toml b/rust/candid_derive/Cargo.toml
index 4c331e37..95d7c56c 100644
--- a/rust/candid_derive/Cargo.toml
+++ b/rust/candid_derive/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "candid_derive"
-version = "0.4.3"
+version = "0.4.4"
 edition = "2018"
 authors = ["DFINITY Team"]
 description = "Macros implementation of #[derive(CandidType)] for the Candid."