diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0accbe0..79d5e85 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
-# [unreleased]
+# [0.2.2]
 
-- ...
+- Update dependencies
 
 # [0.2.1]
 
diff --git a/Cargo.toml b/Cargo.toml
index ddbb4ff..96e8146 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "rocket_session"
-version = "0.2.1"
+version = "0.2.2"
 authors = ["Ondřej Hruška <ondra@ondrovo.com>"]
 edition = "2018"
 license = "MIT"
@@ -16,6 +16,6 @@ categories = [
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-rand = "0.7.3"
-rocket = "0.4.2"
-parking_lot = "0.10.0"
+rand = "0.8"
+rocket = "0.4"
+parking_lot = "0.11"
diff --git a/src/lib.rs b/src/lib.rs
index dfc7d1d..44058da 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -179,6 +179,7 @@ where
                         let token: String = OsRng
                             .sample_iter(&rand::distributions::Alphanumeric)
                             .take(store.config.cookie_len)
+                            .map(char::from)
                             .collect();
 
                         if !store_wg.sessions.contains_key(&token) {