diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 88cc47452e9e64d986f1edd4da6fc5ff3e73b4f8..aebf262fdca5a3976257dccfaa07e97cd971ef19 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -1,13 +1,13 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Dependencies>
   <ProductDependencies>
-    <Dependency Name="System.Device.Gpio" Version="0.1.0-prerelease.19254.2">
+    <Dependency Name="System.Device.Gpio" Version="0.1.0-prerelease.19259.3">
       <Uri>https://github.com/dotnet/iot</Uri>
-      <Sha>69b56e6b96bdf29b1849f5e98e658c461d5aa370</Sha>
+      <Sha>c50778553947f58bf1ff78e327e01116e54428dd</Sha>
     </Dependency>
-    <Dependency Name="Iot.Device.Bindings" Version="0.1.0-prerelease.19254.2">
+    <Dependency Name="Iot.Device.Bindings" Version="0.1.0-prerelease.19259.3">
       <Uri>https://github.com/dotnet/iot</Uri>
-      <Sha>69b56e6b96bdf29b1849f5e98e658c461d5aa370</Sha>
+      <Sha>c50778553947f58bf1ff78e327e01116e54428dd</Sha>
     </Dependency>
   </ProductDependencies>
   <ToolsetDependencies>
diff --git a/eng/Versions.props b/eng/Versions.props
index b004812e3b73b8fc2372bfbdb6c2f68094e10f0d..0c914f72aa61f28656c607649d67329d5a90ab9d 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -2,7 +2,7 @@
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <PreReleaseVersionLabel>prerelease</PreReleaseVersionLabel>
-    <SystemDeviceGpioPackageVersion>0.1.0-prerelease.19254.2</SystemDeviceGpioPackageVersion>
-    <IotDeviceBindingsPackageVersion>0.1.0-prerelease.19254.2</IotDeviceBindingsPackageVersion>
+    <SystemDeviceGpioPackageVersion>0.1.0-prerelease.19259.3</SystemDeviceGpioPackageVersion>
+    <IotDeviceBindingsPackageVersion>0.1.0-prerelease.19259.3</IotDeviceBindingsPackageVersion>
   </PropertyGroup>
 </Project>
diff --git a/src/devices/Mcp23xxx/tests/Mcp23xxxTest.cs b/src/devices/Mcp23xxx/tests/Mcp23xxxTest.cs
index 4af73794a1c9bb31db25184389c7bbf7d43ff2f6..33be57072f942029301797a332bbb7e7bc6892fb 100644
--- a/src/devices/Mcp23xxx/tests/Mcp23xxxTest.cs
+++ b/src/devices/Mcp23xxx/tests/Mcp23xxxTest.cs
@@ -171,6 +171,8 @@ namespace Iot.Device.Mcp23xxx.Tests
         {
             private Dictionary<int, PinValue> _pinValues = new Dictionary<int, PinValue>();
 
+            public int PinCount => 10;
+
             public void Reset() => _pinValues = new Dictionary<int, PinValue>();
 
             public void ClosePin(int pinNumber)
@@ -218,6 +220,16 @@ namespace Iot.Device.Mcp23xxx.Tests
                     Write(pin, value);
                 }
             }
+
+            public void OpenPin(int pinNumber)
+            {
+            }
+
+            public bool IsPinOpen(int pinNumber) => true;
+
+            public PinMode GetPinMode(int pinNumber) => PinMode.Input;
+
+            public bool IsPinModeSupported(int pinNumber, PinMode mode) => true;
         }
     }
 }
diff --git a/src/devices/Pcx857x/tests/Pcx857xTest.cs b/src/devices/Pcx857x/tests/Pcx857xTest.cs
index dd6cc38414c1a08ff85973125460d1ed908b6dc4..ecf471cdce7a9075994be349174a3dbcffaf0c28 100644
--- a/src/devices/Pcx857x/tests/Pcx857xTest.cs
+++ b/src/devices/Pcx857x/tests/Pcx857xTest.cs
@@ -125,6 +125,8 @@ namespace Iot.Device.Pcx857x.Tests
         {
             private Dictionary<int, PinValue> _pinValues = new Dictionary<int, PinValue>();
 
+            public int PinCount => 10;
+
             public void Reset() => _pinValues = new Dictionary<int, PinValue>();
 
             public void ClosePin(int pinNumber)
@@ -172,6 +174,16 @@ namespace Iot.Device.Pcx857x.Tests
                     Write(pin, value);
                 }
             }
+
+            public void OpenPin(int pinNumber)
+            {
+            }
+
+            public bool IsPinOpen(int pinNumber) => true;
+
+            public PinMode GetPinMode(int pinNumber) => PinMode.Input;
+
+            public bool IsPinModeSupported(int pinNumber, PinMode mode) => true;
         }
     }
 }