diff --git a/System.Device.Spi/System.Device.Spi.nfproj b/System.Device.Spi/System.Device.Spi.nfproj
index d69704aa..b2abab86 100644
--- a/System.Device.Spi/System.Device.Spi.nfproj
+++ b/System.Device.Spi/System.Device.Spi.nfproj
@@ -66,7 +66,7 @@
       <HintPath>..\packages\nanoFramework.Runtime.Events.2.0.0-preview.5\lib\nanoFramework.Runtime.Events.dll</HintPath>
     </Reference>
     <Reference Include="System.Device.Gpio, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.System.Device.Gpio.2.0.0-preview.3\lib\System.Device.Gpio.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.Device.Gpio.2.0.0-preview.4\lib\System.Device.Gpio.dll</HintPath>
     </Reference>
   </ItemGroup>
   <ItemGroup>
diff --git a/System.Device.Spi/packages.config b/System.Device.Spi/packages.config
index b1d36a44..973a1d9e 100644
--- a/System.Device.Spi/packages.config
+++ b/System.Device.Spi/packages.config
@@ -2,6 +2,6 @@
 <packages>
   <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.30" targetFramework="netnano1.0" />
   <package id="nanoFramework.Runtime.Events" version="2.0.0-preview.5" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Device.Gpio" version="2.0.0-preview.3" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Device.Gpio" version="2.0.0-preview.4" targetFramework="netnano1.0" />
   <package id="Nerdbank.GitVersioning" version="3.9.50" developmentDependency="true" targetFramework="netnano1.0" />
 </packages>
\ No newline at end of file
diff --git a/System.Device.Spi/packages.lock.json b/System.Device.Spi/packages.lock.json
index 77cfa7b0..860a28ad 100644
--- a/System.Device.Spi/packages.lock.json
+++ b/System.Device.Spi/packages.lock.json
@@ -16,9 +16,9 @@
       },
       "nanoFramework.System.Device.Gpio": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.3, 2.0.0-preview.3]",
-        "resolved": "2.0.0-preview.3",
-        "contentHash": "lpdXnsx+Hp/0Hg+BuGjNaxBW1HjkqxX37qe8lGLknpPYcLDxiLi6tmyHf2das9nBGUD3NCL10j0fa+REjkhf8g=="
+        "requested": "[2.0.0-preview.4, 2.0.0-preview.4]",
+        "resolved": "2.0.0-preview.4",
+        "contentHash": "1GsOsmwvLQOi5oqoLAeY29sVAiUz+e94DY7Ka6TTyoDD+TuIXIKZzdBpuHLXS3D32ClNRFYndTVWFBQBKFESTA=="
       },
       "Nerdbank.GitVersioning": {
         "type": "Direct",
diff --git a/Test/SpiHardwareUnitTests/SpiHardwareUnitTests.nfproj b/Test/SpiHardwareUnitTests/SpiHardwareUnitTests.nfproj
index e8ae81bd..2a25b360 100644
--- a/Test/SpiHardwareUnitTests/SpiHardwareUnitTests.nfproj
+++ b/Test/SpiHardwareUnitTests/SpiHardwareUnitTests.nfproj
@@ -52,7 +52,7 @@
       <HintPath>..\..\packages\nanoFramework.TestFramework.4.0.0-preview.45\lib\nanoFramework.UnitTestLauncher.exe</HintPath>
     </Reference>
     <Reference Include="System.Device.Gpio, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\..\packages\nanoFramework.System.Device.Gpio.2.0.0-preview.3\lib\System.Device.Gpio.dll</HintPath>
+      <HintPath>..\..\packages\nanoFramework.System.Device.Gpio.2.0.0-preview.4\lib\System.Device.Gpio.dll</HintPath>
     </Reference>
   </ItemGroup>
   <ItemGroup>
diff --git a/Test/SpiHardwareUnitTests/packages.config b/Test/SpiHardwareUnitTests/packages.config
index 528caeb9..0e465d6f 100644
--- a/Test/SpiHardwareUnitTests/packages.config
+++ b/Test/SpiHardwareUnitTests/packages.config
@@ -2,6 +2,6 @@
 <packages>
   <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.30" targetFramework="netnano1.0" />
   <package id="nanoFramework.Runtime.Events" version="2.0.0-preview.5" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Device.Gpio" version="2.0.0-preview.3" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Device.Gpio" version="2.0.0-preview.4" targetFramework="netnano1.0" />
   <package id="nanoFramework.TestFramework" version="4.0.0-preview.45" targetFramework="netnano1.0" developmentDependency="true" />
 </packages>
\ No newline at end of file
diff --git a/Test/SpiHardwareUnitTests/packages.lock.json b/Test/SpiHardwareUnitTests/packages.lock.json
index 4da98681..a7e8625e 100644
--- a/Test/SpiHardwareUnitTests/packages.lock.json
+++ b/Test/SpiHardwareUnitTests/packages.lock.json
@@ -16,9 +16,9 @@
       },
       "nanoFramework.System.Device.Gpio": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.3, 2.0.0-preview.3]",
-        "resolved": "2.0.0-preview.3",
-        "contentHash": "lpdXnsx+Hp/0Hg+BuGjNaxBW1HjkqxX37qe8lGLknpPYcLDxiLi6tmyHf2das9nBGUD3NCL10j0fa+REjkhf8g=="
+        "requested": "[2.0.0-preview.4, 2.0.0-preview.4]",
+        "resolved": "2.0.0-preview.4",
+        "contentHash": "1GsOsmwvLQOi5oqoLAeY29sVAiUz+e94DY7Ka6TTyoDD+TuIXIKZzdBpuHLXS3D32ClNRFYndTVWFBQBKFESTA=="
       },
       "nanoFramework.TestFramework": {
         "type": "Direct",
diff --git a/nanoFramework.System.Device.Spi.nuspec b/nanoFramework.System.Device.Spi.nuspec
index 01b01d63..521e57f8 100644
--- a/nanoFramework.System.Device.Spi.nuspec
+++ b/nanoFramework.System.Device.Spi.nuspec
@@ -21,7 +21,7 @@ This package requires a target with System.Device.Spi v$nativeVersion$ (checksum
     <dependencies>
       <dependency id="nanoFramework.CoreLibrary" version="2.0.0-preview.30" />
       <dependency id="nanoFramework.Runtime.Events" version="2.0.0-preview.5" />
-      <dependency id="nanoFramework.System.Device.Gpio" version="2.0.0-preview.3" />
+      <dependency id="nanoFramework.System.Device.Gpio" version="2.0.0-preview.4" />
     </dependencies>
   </metadata>
   <files>