diff --git a/.github/workflows/oxipng.yml b/.github/workflows/oxipng.yml
index 9b21cf8f..3a27bbbf 100644
--- a/.github/workflows/oxipng.yml
+++ b/.github/workflows/oxipng.yml
@@ -19,7 +19,7 @@ jobs:
         - x86_64-apple-darwin
         toolchain:
         # Minimum stable
-        - "1.45.0"
+        - "1.46.0"
         - stable
         - beta
         - nightly
diff --git a/Cargo.lock b/Cargo.lock
index c4a4bd81..639a508f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,7 +1,5 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
-
 [[package]]
 name = "adler"
 version = "1.0.2"
diff --git a/README.md b/README.md
index 1e222157..13845c76 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,7 @@ cargo build --release
 cp target/release/oxipng /usr/local/bin
 ```
 
-The current minimum supported Rust version is **1.45.0**.
+The current minimum supported Rust version is **1.46.0**.
 
 Oxipng follows Semantic Versioning.
 
diff --git a/README.template.md b/README.template.md
index 794d585c..05fc7033 100644
--- a/README.template.md
+++ b/README.template.md
@@ -30,7 +30,7 @@ cargo build --release
 cp target/release/oxipng /usr/local/bin
 ```
 
-The current minimum supported Rust version is **1.45.0**.
+The current minimum supported Rust version is **1.46.0**.
 
 Oxipng follows Semantic Versioning.
 
diff --git a/build.rs b/build.rs
index 59e2cbba..e9f6cf5a 100644
--- a/build.rs
+++ b/build.rs
@@ -3,7 +3,7 @@ use std::process::exit;
 
 fn main() {
     // This should match the version in Github Actions scripts and the Readme
-    const REQUIRED_VERSION: &str = "1.45.0";
+    const REQUIRED_VERSION: &str = "1.46.0";
     if version().unwrap() < Version::parse(REQUIRED_VERSION).unwrap() {
         eprintln!("oxipng requires rustc >= {}.", REQUIRED_VERSION);
         exit(1);