diff --git a/.github/workflows/aes-kw.yml b/.github/workflows/aes-kw.yml
index 432ca91..ba43f5e 100644
--- a/.github/workflows/aes-kw.yml
+++ b/.github/workflows/aes-kw.yml
@@ -22,7 +22,7 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.56.0 # MSRV
+          - 1.81.0 # MSRV
           - stable
         target:
           - thumbv7em-none-eabi
@@ -48,7 +48,7 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.56.0 # MSRV
+          - 1.81.0 # MSRV
           - stable
     steps:
       - uses: actions/checkout@v4
diff --git a/.github/workflows/workspace.yml b/.github/workflows/workspace.yml
index 864bcb7..9c19ab9 100644
--- a/.github/workflows/workspace.yml
+++ b/.github/workflows/workspace.yml
@@ -18,7 +18,7 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: 1.56.0 # MSRV
+          toolchain: 1.81.0 # MSRV
           components: clippy
           override: true
       - run: cargo clippy --all -- -D warnings
diff --git a/aes-kw/Cargo.toml b/aes-kw/Cargo.toml
index 6d9a955..83be571 100644
--- a/aes-kw/Cargo.toml
+++ b/aes-kw/Cargo.toml
@@ -10,7 +10,7 @@ keywords = ["crypto", "AES-KW", "KW", "AES-KWP", "KWP"]
 categories = ["cryptography", "no-std"]
 readme = "README.md"
 edition = "2021"
-rust-version = "1.56"
+rust-version = "1.81"
 
 [dependencies]
 aes = "=0.9.0-pre.2"