diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0b65bef..b70309a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -29,6 +29,16 @@ jobs:
       - run: cargo build
       - run: cargo test --features serde/derive,serde/rc
 
+  minimal:
+    name: Minimal versions
+    runs-on: ubuntu-latest
+    timeout-minutes: 45
+    steps:
+      - uses: actions/checkout@v3
+      - uses: dtolnay/rust-toolchain@nightly
+      - run: cargo generate-lockfile -Z minimal-versions
+      - run: cargo check --locked
+
   clippy:
     name: Clippy
     runs-on: ubuntu-latest
diff --git a/Cargo.toml b/Cargo.toml
index 6780c38..6fc173e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,7 +12,7 @@ repository = "https://github.com/serde-rs/test"
 rust-version = "1.56"
 
 [dependencies]
-serde = "1.0.60"
+serde = "1.0.69"
 
 [dev-dependencies]
 serde = { version = "1", features = ["rc"] }