diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4fd0946..ab2726b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -62,7 +62,7 @@ jobs:
       - name: Install Rust toolchain
         uses: dtolnay/rust-toolchain@master
         with:
-          toolchain: 1.66.0
+          toolchain: 1.67.0
           targets: ${{ matrix.target }}
       - uses: taiki-e/install-action@v2
         with:
@@ -131,7 +131,7 @@ jobs:
       - name: Install Rust toolchain
         uses: dtolnay/rust-toolchain@master
         with:
-          toolchain: 1.66.0
+          toolchain: 1.67.0
           targets: ${{ matrix.target }}
       - uses: taiki-e/install-action@v2
         with:
@@ -161,7 +161,7 @@ jobs:
       - name: Install Rust toolchain
         uses: dtolnay/rust-toolchain@master
         with:
-          toolchain: 1.66.0
+          toolchain: 1.67.0
           targets: ${{ matrix.target }}
       - uses: taiki-e/install-action@v2
         with:
@@ -252,7 +252,7 @@ jobs:
       - name: Install Rust toolchain
         uses: dtolnay/rust-toolchain@master
         with:
-          toolchain: 1.66.0
+          toolchain: 1.67.0
           targets: ${{ matrix.target }}
       - uses: taiki-e/install-action@v2
         with:
diff --git a/Cargo.toml b/Cargo.toml
index 7d25ff1..b5fcb9b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,7 +12,7 @@ repository = "https://github.com/svartalf/hostname"
 readme = "README.md"
 license = "MIT"
 edition = "2021"
-rust-version = "1.66"
+rust-version = "1.67"
 
 [features]
 default = []
diff --git a/README.md b/README.md
index cbe8176..41501c8 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 [![Latest Version](https://img.shields.io/crates/v/hostname.svg)](https://crates.io/crates/hostname)
 [![Latest Version](https://docs.rs/hostname/badge.svg)](https://docs.rs/hostname)
 [![Build Status](https://github.com/svartalf/hostname/workflows/Continuous%20integration/badge.svg)](https://github.com/svartalf/hostname/actions)
-![Minimum rustc version](https://img.shields.io/badge/rustc-1.66+-green.svg)
+![Minimum rustc version](https://img.shields.io/badge/rustc-1.67+-green.svg)
 ![MIT licensed](https://img.shields.io/badge/license-MIT-blue.svg)
 ![Crates.io](https://img.shields.io/crates/d/hostname)
 
@@ -17,7 +17,7 @@
 
 ## Rust version requirements
 
-Since version `0.4.0` this crate requires Rust version `1.66.0` or greater.
+Since version `0.4.0` this crate requires Rust version `1.67.0` or greater.
 
 This version is explicitly tested in CI
 and may be bumped in any major or minor release as needed.\