diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 5f95f44..fe96646 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -31,7 +31,7 @@ jobs:
         uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: 1.70
+          toolchain: 1.72
           override: true
       - name: Build
         uses: actions-rs/cargo@v1
diff --git a/Cargo.toml b/Cargo.toml
index 6649cf3..617ec35 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,7 +3,7 @@ name = "dns-ptr-resolver"
 version = "1.2.0"
 authors = ["William Desportes <williamdes@wdes.fr>"]
 edition = "2021"
-rust-version = "1.70.0"  # MSRV (required by crate:mio)
+rust-version = "1.72.0"  # MSRV
 description = "A program to resolve DNS IPs to PTRs"
 homepage = "https://github.com/wdes/dns-ptr-resolver#readme"
 documentation = "https://docs.rs/dns-ptr-resolver"