diff --git a/.github/workflows/quickstart.yml b/.github/workflows/quickstart.yml
index f930f67..4122c19 100644
--- a/.github/workflows/quickstart.yml
+++ b/.github/workflows/quickstart.yml
@@ -12,6 +12,9 @@ jobs:
   check:
     name: Check
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        toolchain: [ stable, "1.43.0" ]
     steps:
       - name: Checkout sources
         uses: actions/checkout@v2
@@ -22,7 +25,7 @@ jobs:
         uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: stable
+          toolchain: ${{ matrix.toolchain }}
           override: true
 
       - name: Run cargo check
@@ -33,6 +36,9 @@ jobs:
   test:
     name: Test Suite
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        toolchain: [ stable, "1.43.0" ]
     steps:
       - name: Checkout sources
         uses: actions/checkout@v2
@@ -43,7 +49,7 @@ jobs:
         uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: stable
+          toolchain: ${{ matrix.toolchain }}
           override: true
 
       - name: Run cargo test
@@ -64,6 +70,7 @@ jobs:
         uses: actions-rs/toolchain@v1
         with:
           profile: minimal
+          # lint using only the latest stable
           toolchain: stable
           override: true
           components: rustfmt, clippy
diff --git a/Cargo.toml b/Cargo.toml
index 856f7e0..1dc052b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,4 +11,4 @@ pest = "2.1.3"
 pest_derive = "2.1.0"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0.57"
-slyce = "0.3.0"
+slyce = "0.3.1"