diff --git a/.github/workflows/build-events.yml b/.github/workflows/build-events.yml
index 172bcdd8..372375b5 100644
--- a/.github/workflows/build-events.yml
+++ b/.github/workflows/build-events.yml
@@ -22,7 +22,6 @@ jobs:
       RUST_BACKTRACE: 1
     steps:
       - uses: actions/checkout@v3
-
       - name: Build events
         uses: ./.github/actions/rust-build
         with:
@@ -34,6 +33,23 @@ jobs:
       - uses: actions/checkout@v3
       - uses: dtolnay/rust-toolchain@stable
       - uses: Swatinem/rust-cache@v2
-
       - name: Test individual event features
         run: make check-event-features
+  semver:
+    name: semver
+    needs: [build, check-event-features]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Check `aws_lambda_events` semver with only default features
+        uses: obi1kenobi/cargo-semver-checks-action@v2
+        with:
+          rust-toolchain: stable
+          package: aws_lambda_events
+          feature-group: default-features
+      - name: Check `aws_lambda_events` semver with all features
+        uses: obi1kenobi/cargo-semver-checks-action@v2
+        with:
+          rust-toolchain: stable
+          package: aws_lambda_events
+          feature-group: all-features
diff --git a/.github/workflows/build-extension.yml b/.github/workflows/build-extension.yml
index 0f151f43..2daaa40d 100644
--- a/.github/workflows/build-extension.yml
+++ b/.github/workflows/build-extension.yml
@@ -1,4 +1,4 @@
-name: Check Lambda Runtime
+name: Check Lambda Extension
 
 on:
   push:
@@ -28,16 +28,31 @@ jobs:
       RUST_BACKTRACE: 1
     steps:
       - uses: actions/checkout@v3
-
       - name: Build Runtime API Client
         uses: ./.github/actions/rust-build
         with:
           package: lambda_runtime_api_client
           toolchain: ${{ matrix.toolchain}}
-
-
       - name: Build Extensions runtime
         uses: ./.github/actions/rust-build
         with:
           package: lambda-extension
           toolchain: ${{ matrix.toolchain}}
+  semver:
+    name: semver
+    needs: build-runtime
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Check `lambda-extension` semver with only default features
+        uses: obi1kenobi/cargo-semver-checks-action@v2
+        with:
+          rust-toolchain: stable
+          package: lambda-extension
+          feature-group: default-features
+      - name: Check `lambda-extension` semver with all features
+        uses: obi1kenobi/cargo-semver-checks-action@v2
+        with:
+          rust-toolchain: stable
+          package: lambda-extension
+          feature-group: all-features
diff --git a/.github/workflows/build-runtime.yml b/.github/workflows/build-runtime.yml
index 8720af17..c5cf2d08 100644
--- a/.github/workflows/build-runtime.yml
+++ b/.github/workflows/build-runtime.yml
@@ -27,21 +27,36 @@ jobs:
       RUST_BACKTRACE: 1
     steps:
       - uses: actions/checkout@v3
-
       - name: Build Runtime API Client
         uses: ./.github/actions/rust-build
         with:
           package: lambda_runtime_api_client
           toolchain: ${{ matrix.toolchain}}
-
       - name: Build Functions runtime
         uses: ./.github/actions/rust-build
         with:
           package: lambda_runtime
           toolchain: ${{ matrix.toolchain}}
-
       - name: Build HTTP layer
         uses: ./.github/actions/rust-build
         with:
           package: lambda_http
           toolchain: ${{ matrix.toolchain}}
+  semver:
+    name: semver
+    needs: build-runtime
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Check `lambda_runtime_api_client`, `lambda_runtime`, lambda_http` semver with only default features
+        uses: obi1kenobi/cargo-semver-checks-action@v2
+        with:
+          rust-toolchain: stable
+          package: lambda_runtime_api_client, lambda_runtime, lambda_http
+          feature-group: default-features
+      - name: Check `lambda_runtime_api_client`, `lambda_runtime`, lambda_http` semver with all features
+        uses: obi1kenobi/cargo-semver-checks-action@v2
+        with:
+          rust-toolchain: stable
+          package: lambda_runtime_api_client, lambda_runtime, lambda_http
+          feature-group: all-features