diff --git a/CHANGELOG.md b/CHANGELOG.md
index cc105ee..0b216a7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+<a name="v0.3.0"></a>
+### v0.3.0 (2023-02-16)
+
+#### Maintenance
+
+*   update dependencies
+
 <a name="v0.2.2"></a>
 ### v0.2.2 (2023-02-02)
 
diff --git a/Cargo.toml b/Cargo.toml
index 686f9d8..3ad9107 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "aquamarine"
-version = "0.2.2"
+version = "0.3.0"
 authors = ["Mike Lubinets <git@mkl.dev>"]
 description = "A mermaid.js integration for rustdoc"
 keywords = ["proc_macro", "docs", "rustdoc", "mermaid", "diagram"]
@@ -17,8 +17,8 @@ proc-macro = true
 quote = "1"
 proc-macro2 = "1"
 proc-macro-error = "1"
-itertools = "0.9"
+itertools = "0.10"
 syn = "1"
 
 [dev-dependencies]
-pretty_assertions = "0.6"
+pretty_assertions = "1"
diff --git a/README.md b/README.md
index 92ddf5f..cf40d3a 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 [![crates.io](https://img.shields.io/crates/d/aquamarine)](https://crates.io/crates/aquamarine)
 [![docs.rs](https://docs.rs/aquamarine/badge.svg)](https://docs.rs/aquamarine)
 
-*Compiler support: this crate requires rustc 1.31.1 or newer*
+*Compiler support: this crate requires rustc 1.38.0 or newer*
 
 Aquamarine is a procedural macro extension for [rustdoc](https://doc.rust-lang.org/rustdoc/index.html), 
 that aims to improve the visual component of Rust documentation through use of the [mermaid.js](https://mermaid-js.github.io/mermaid/#/) diagrams.
@@ -96,4 +96,4 @@ Crates that use `aquamarine` in their documentation
  - [replicadse/senile](https://github.com/replicadse/senile)
  - [teloxide](https://github.com/teloxide/teloxide)
  
-[and other](https://crates.io/crates/aquamarine/reverse_dependencies)
\ No newline at end of file
+[and other](https://crates.io/crates/aquamarine/reverse_dependencies)
diff --git a/demo/Cargo.toml b/demo/Cargo.toml
index 77f8dd8..db07549 100644
--- a/demo/Cargo.toml
+++ b/demo/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "aquamarine-demo-crate"
-version = "0.2.2"
+version = "0.3.0"
 authors = ["Mike Lubinets <git@mkl.dev>"]
 description = "A demo crate for aquamarine -- the mermaid.js integration for rustdoc"
 keywords = ["proc_macro", "docs", "rustdoc", "mermaid", "diagram"]
@@ -9,5 +9,5 @@ edition = "2018"
 license = "MIT"
 
 [dependencies.aquamarine]
-version = "0.2.2"
+version = "0.3.0"
 path = "../"