diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b4777dc..346dfe4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -34,7 +34,7 @@ jobs:
           - stable
           - beta
           - nightly
-          - 1.36 # MSRV
+          - 1.56 # MSRV
 
     steps:
       - uses: actions/checkout@v3
diff --git a/Cargo.toml b/Cargo.toml
index 62a3720..1ac2cc5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,5 +11,7 @@ version = "0.1.0"
 readme = "README.md"
 edition = "2021"
 
+rust-version = "1.56"
+
 [dependencies]
 embedded-hal = "0.2.1"