diff --git a/build/download-native-libs.sh b/build/download-native-libs.sh
index 678774c6..be38a5b1 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="0.4.24"
+FFI_VERSION="0.4.25"
 FFI_BASE_URL="https://github.com/you54f/pact-reference/releases/download/libpact_ffi-v$FFI_VERSION"
 
 GREEN="\e[32m"
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 c5351ee2..275c2724 100644
--- a/samples/OrdersApi/Consumer.Tests/pacts/Fulfilment API-Orders API.json	
+++ b/samples/OrdersApi/Consumer.Tests/pacts/Fulfilment API-Orders API.json	
@@ -159,7 +159,7 @@
   "metadata": {
     "pactRust": {
       "ffi": "0.4.21",
-      "models": "1.2.0"
+      "models": "1.2.1"
     },
     "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 f5dd9dd9..660aebc9 100644
--- a/tests/PactNet.Tests/data/v2-consumer-integration.json
+++ b/tests/PactNet.Tests/data/v2-consumer-integration.json
@@ -75,7 +75,7 @@
   "metadata": {
     "pactRust": {
       "ffi": "0.4.21",
-      "models": "1.2.0"
+      "models": "1.2.1"
     },
     "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 6287a1b7..8c6ec9dc 100644
--- a/tests/PactNet.Tests/data/v3-consumer-integration.json
+++ b/tests/PactNet.Tests/data/v3-consumer-integration.json
@@ -133,7 +133,7 @@
   "metadata": {
     "pactRust": {
       "ffi": "0.4.21",
-      "models": "1.2.0"
+      "models": "1.2.1"
     },
     "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 de10c131..88b54439 100644
--- a/tests/PactNet.Tests/data/v3-message-consumer-integration.json
+++ b/tests/PactNet.Tests/data/v3-message-consumer-integration.json
@@ -37,7 +37,7 @@
     },
     "pactRust": {
       "ffi": "0.4.21",
-      "models": "1.2.0"
+      "models": "1.2.1"
     },
     "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 b2ed0dab..f9031c9e 100644
--- a/tests/PactNet.Tests/data/v3-message-integration.json
+++ b/tests/PactNet.Tests/data/v3-message-integration.json
@@ -17,7 +17,7 @@
   "metadata": {
     "pactRust": {
       "ffi": "0.4.21",
-      "models": "1.2.0"
+      "models": "1.2.1"
     },
     "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 4d7799ed..a08540ad 100644
--- a/tests/PactNet.Tests/data/v3-server-integration.json
+++ b/tests/PactNet.Tests/data/v3-server-integration.json
@@ -47,7 +47,7 @@
   "metadata": {
     "pactRust": {
       "ffi": "0.4.21",
-      "models": "1.2.0"
+      "models": "1.2.1"
     },
     "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 db795d37..37899aa3 100644
--- a/tests/PactNet.Tests/data/v4-combined-integration.json
+++ b/tests/PactNet.Tests/data/v4-combined-integration.json
@@ -188,7 +188,7 @@
     },
     "pactRust": {
       "ffi": "0.4.21",
-      "models": "1.2.0"
+      "models": "1.2.1"
     },
     "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 8ae7ea04..21e0a3be 100644
--- a/tests/PactNet.Tests/data/v4-consumer-integration.json
+++ b/tests/PactNet.Tests/data/v4-consumer-integration.json
@@ -153,7 +153,7 @@
   "metadata": {
     "pactRust": {
       "ffi": "0.4.21",
-      "models": "1.2.0"
+      "models": "1.2.1"
     },
     "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 5b83ed5b..b3ed25bf 100644
--- a/tests/PactNet.Tests/data/v4-message-consumer-integration.json
+++ b/tests/PactNet.Tests/data/v4-message-consumer-integration.json
@@ -42,7 +42,7 @@
     },
     "pactRust": {
       "ffi": "0.4.21",
-      "models": "1.2.0"
+      "models": "1.2.1"
     },
     "pactSpecification": {
       "version": "4.0"