diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 5933b10..0b192e0 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -65,3 +65,11 @@ jobs:
       - uses: actions/checkout@v3
       - uses: dtolnay/rust-toolchain@stable
       - run: cargo doc
+  msrv:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          toolchain: 1.70.0
+      - run: cargo check --lib --all-features
diff --git a/Cargo.toml b/Cargo.toml
index 64c8378..a0ab030 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,6 +3,7 @@ name = "vt100"
 version = "0.16.1"
 authors = ["Jesse Luehrs <doy@tozt.net>"]
 edition = "2021"
+rust-version = "1.70"
 
 description = "Library for parsing terminal data"
 homepage = "https://github.com/doy/vt100-rust"