diff --git a/.github/workflows/oxipng.yml b/.github/workflows/oxipng.yml
index eb0edabf..a51fa5b8 100644
--- a/.github/workflows/oxipng.yml
+++ b/.github/workflows/oxipng.yml
@@ -22,7 +22,7 @@ jobs:
           - x86_64-apple-darwin
         toolchain:
           # Minimum stable
-          - "1.61.0"
+          - "1.65.0"
           - stable
           - beta
           - nightly
diff --git a/Cargo.toml b/Cargo.toml
index cf3ab8dc..0dea7d51 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,7 +10,7 @@ license = "MIT"
 name = "oxipng"
 repository = "https://github.com/shssoichiro/oxipng"
 version = "8.0.0"
-rust-version = "1.61.0"
+rust-version = "1.65.0"
 
 [badges]
 travis-ci = { repository = "shssoichiro/oxipng", branch = "master" }
diff --git a/README.md b/README.md
index b8d13c28..d2e7262e 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,7 @@ cargo build --release
 cp target/release/oxipng /usr/local/bin
 ```
 
-The current minimum supported Rust version is **1.61.0**.
+The current minimum supported Rust version is **1.65.0**.
 
 Oxipng follows Semantic Versioning.
 
diff --git a/README.template.md b/README.template.md
index 4da791e7..265e9f9b 100644
--- a/README.template.md
+++ b/README.template.md
@@ -32,7 +32,7 @@ cargo build --release
 cp target/release/oxipng /usr/local/bin
 ```
 
-The current minimum supported Rust version is **1.61.0**.
+The current minimum supported Rust version is **1.65.0**.
 
 Oxipng follows Semantic Versioning.