diff --git a/build/download-native-libs.sh b/build/download-native-libs.sh
index 0a73211b..f09c28c6 100755
--- a/build/download-native-libs.sh
+++ b/build/download-native-libs.sh
@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
-FFI_VERSION="0.4.5"
+FFI_VERSION="0.4.16"
 FFI_BASE_URL="https://github.com/pact-foundation/pact-reference/releases/download/libpact_ffi-v$FFI_VERSION"
 
 GREEN="\e[32m"
@@ -42,10 +42,10 @@ download_native() {
 
     if [[ "$OSTYPE" == "darwin"* ]]; then
         # OSX requires an empty arg passed to -i, but this doesn't work on Lin/Win
-        sed -Ei '' "s|../target/artifacts/.+$|$path/$dest_file|" "$path/$dest_file.sha256"
+        sed -Ei '' "s|../release_artifacts/.+$|$path/$dest_file|" "$path/$dest_file.sha256"
         shasum -a 256 --check --quiet "$path/$dest_file.sha256"
     else
-        sed -Ei "s|../target/artifacts/.+$|$path/$dest_file|" "$path/$dest_file.sha256"
+        sed -Ei "s|../release_artifacts/.+$|$path/$dest_file|" "$path/$dest_file.sha256"
         sha256sum --check --quiet "$path/$dest_file.sha256"
     fi
 
diff --git a/samples/OrdersApi/Consumer.Tests/pacts/Fulfilment API-Orders API.json b/samples/OrdersApi/Consumer.Tests/pacts/Fulfilment API-Orders API.json
index 9441aa04..50b68e5d 100644
--- a/samples/OrdersApi/Consumer.Tests/pacts/Fulfilment API-Orders API.json	
+++ b/samples/OrdersApi/Consumer.Tests/pacts/Fulfilment API-Orders API.json	
@@ -158,8 +158,8 @@
   ],
   "metadata": {
     "pactRust": {
-      "ffi": "0.4.5",
-      "models": "1.1.2"
+      "ffi": "0.4.16",
+      "models": "1.1.19"
     },
     "pactSpecification": {
       "version": "4.0"
diff --git a/tests/PactNet.Tests/data/v2-consumer-integration.json b/tests/PactNet.Tests/data/v2-consumer-integration.json
index 9c268d98..9f76184a 100644
--- a/tests/PactNet.Tests/data/v2-consumer-integration.json
+++ b/tests/PactNet.Tests/data/v2-consumer-integration.json
@@ -74,8 +74,8 @@
   ],
   "metadata": {
     "pactRust": {
-      "ffi": "0.4.5",
-      "models": "1.1.2"
+      "ffi": "0.4.16",
+      "models": "1.1.19"
     },
     "pactSpecification": {
       "version": "2.0.0"
diff --git a/tests/PactNet.Tests/data/v3-consumer-integration.json b/tests/PactNet.Tests/data/v3-consumer-integration.json
index 3ccfcb24..fa2df241 100644
--- a/tests/PactNet.Tests/data/v3-consumer-integration.json
+++ b/tests/PactNet.Tests/data/v3-consumer-integration.json
@@ -132,8 +132,8 @@
   ],
   "metadata": {
     "pactRust": {
-      "ffi": "0.4.5",
-      "models": "1.1.2"
+      "ffi": "0.4.16",
+      "models": "1.1.19"
     },
     "pactSpecification": {
       "version": "3.0.0"
diff --git a/tests/PactNet.Tests/data/v3-message-consumer-integration.json b/tests/PactNet.Tests/data/v3-message-consumer-integration.json
index 3d8dd1cf..0c02ff57 100644
--- a/tests/PactNet.Tests/data/v3-message-consumer-integration.json
+++ b/tests/PactNet.Tests/data/v3-message-consumer-integration.json
@@ -36,8 +36,8 @@
       "language": "C#"
     },
     "pactRust": {
-      "ffi": "0.4.5",
-      "models": "1.1.2"
+      "ffi": "0.4.16",
+      "models": "1.1.19"
     },
     "pactSpecification": {
       "version": "3.0.0"
diff --git a/tests/PactNet.Tests/data/v3-message-integration.json b/tests/PactNet.Tests/data/v3-message-integration.json
index 0b383240..85ba4363 100644
--- a/tests/PactNet.Tests/data/v3-message-integration.json
+++ b/tests/PactNet.Tests/data/v3-message-integration.json
@@ -16,8 +16,8 @@
   ],
   "metadata": {
     "pactRust": {
-      "ffi": "0.4.5",
-      "models": "1.1.2"
+      "ffi": "0.4.16",
+      "models": "1.1.19"
     },
     "pactSpecification": {
       "version": "3.0.0"
diff --git a/tests/PactNet.Tests/data/v3-server-integration.json b/tests/PactNet.Tests/data/v3-server-integration.json
index d41eed03..c9b869c0 100644
--- a/tests/PactNet.Tests/data/v3-server-integration.json
+++ b/tests/PactNet.Tests/data/v3-server-integration.json
@@ -46,8 +46,8 @@
   ],
   "metadata": {
     "pactRust": {
-      "ffi": "0.4.5",
-      "models": "1.1.2"
+      "ffi": "0.4.16",
+      "models": "1.1.19"
     },
     "pactSpecification": {
       "version": "3.0.0"
diff --git a/tests/PactNet.Tests/data/v4-combined-integration.json b/tests/PactNet.Tests/data/v4-combined-integration.json
index f1d90fbd..d42e3ff5 100644
--- a/tests/PactNet.Tests/data/v4-combined-integration.json
+++ b/tests/PactNet.Tests/data/v4-combined-integration.json
@@ -187,8 +187,8 @@
       "language": "C#"
     },
     "pactRust": {
-      "ffi": "0.4.5",
-      "models": "1.1.2"
+      "ffi": "0.4.16",
+      "models": "1.1.19"
     },
     "pactSpecification": {
       "version": "4.0"
diff --git a/tests/PactNet.Tests/data/v4-consumer-integration.json b/tests/PactNet.Tests/data/v4-consumer-integration.json
index 0f3df639..11d15825 100644
--- a/tests/PactNet.Tests/data/v4-consumer-integration.json
+++ b/tests/PactNet.Tests/data/v4-consumer-integration.json
@@ -152,8 +152,8 @@
   ],
   "metadata": {
     "pactRust": {
-      "ffi": "0.4.5",
-      "models": "1.1.2"
+      "ffi": "0.4.16",
+      "models": "1.1.19"
     },
     "pactSpecification": {
       "version": "4.0"
diff --git a/tests/PactNet.Tests/data/v4-message-consumer-integration.json b/tests/PactNet.Tests/data/v4-message-consumer-integration.json
index ed964433..f5124e0e 100644
--- a/tests/PactNet.Tests/data/v4-message-consumer-integration.json
+++ b/tests/PactNet.Tests/data/v4-message-consumer-integration.json
@@ -41,8 +41,8 @@
       "language": "C#"
     },
     "pactRust": {
-      "ffi": "0.4.5",
-      "models": "1.1.2"
+      "ffi": "0.4.16",
+      "models": "1.1.19"
     },
     "pactSpecification": {
       "version": "4.0"