diff --git a/.github/workflows/main_ci.yml b/.github/workflows/main_ci.yml
index a31fe7c6..5bba830d 100644
--- a/.github/workflows/main_ci.yml
+++ b/.github/workflows/main_ci.yml
@@ -35,7 +35,7 @@ jobs:
     strategy:
       matrix:
         os: [windows-latest, ubuntu-latest, macos-latest]
-        crypto: [openssl_1.1, openssl_3, boringssl]
+        crypto: [openssl_1.1, openssl_3, openssl_3.1, boringssl]
 
     env:
       BUILD_DIR: "${RUNNER_TEMP}/build_${{ matrix.crypto }}"
@@ -123,7 +123,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        crypto: [openssl_1.1, openssl_3, boringssl]
+        crypto: [openssl_1.1, openssl_3, openssl_3.1, boringssl]
 
     env:
       BUILD_DIR: "${RUNNER_TEMP}/build_${{ matrix.crypto }}"
diff --git a/alternatives/openssl_3.1/vcpkg.json b/alternatives/openssl_3.1/vcpkg.json
new file mode 100644
index 00000000..208e6ab7
--- /dev/null
+++ b/alternatives/openssl_3.1/vcpkg.json
@@ -0,0 +1,20 @@
+{
+  "name": "mlspp",
+  "version-string": "0.1",
+  "description": "Cisco MLS C++ library",
+  "dependencies": [
+    {
+      "name": "openssl",
+      "version>=": "3.1.3"
+    },
+    "doctest",
+    "nlohmann-json"
+  ],
+  "builtin-baseline": "5908d702d61cea1429b223a0b7a10ab86bad4c78",
+  "overrides": [
+    {
+      "name": "openssl",
+      "version": "3.1.3"
+    }
+  ]
+}