diff --git a/CHANGELOG.md b/CHANGELOG.md
index 895341a2..361137ce 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+## 0.4.2
+
+- WASI. PR [#152](https://github.com/datablockset/blockset/pull/158).
+
 ## 0.4.1
 
 - Estimated time left. PR [#151](https://github.com/datablockset/blockset/pull/151).
diff --git a/Cargo.toml b/Cargo.toml
index e54547a7..f82e7665 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,7 +3,7 @@ members = ["blockset", "blockset-lib"]
 resolver = "2"
 
 [workspace.package]
-version = "0.4.1"
+version = "0.4.2"
 edition = "2021"
 license = "GPL-3.0-or-later"
 authors = ["Sergey Shandar"]
@@ -11,6 +11,6 @@ repository = "https://github.com/datablockset/blockset"
 
 [workspace.dependencies]
 io-trait = "0.8.0"
-io-impl = "0.8.0"
+io-impl = "0.8.1"
 io-test = "0.8.1"
-wasm-bindgen-test = "0.3.38"
+wasm-bindgen-test = "0.3.39"
diff --git a/blockset/Cargo.toml b/blockset/Cargo.toml
index a5b112a1..7e4b8f51 100644
--- a/blockset/Cargo.toml
+++ b/blockset/Cargo.toml
@@ -11,5 +11,5 @@ repository.workspace = true
 
 [dependencies]
 # we should always use a specific version of the blockset-lib
-blockset-lib = { path = "../blockset-lib", version = "=0.4.1" }
+blockset-lib = { path = "../blockset-lib", version = "=0.4.2" }
 io-impl.workspace = true