diff --git a/System.Device.I2s/System.Device.I2s.nfproj b/System.Device.I2s/System.Device.I2s.nfproj
index af24236..063c9e1 100644
--- a/System.Device.I2s/System.Device.I2s.nfproj
+++ b/System.Device.I2s/System.Device.I2s.nfproj
@@ -58,7 +58,7 @@
   </ItemGroup>
   <ItemGroup>
     <Reference Include="mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.CoreLibrary.2.0.0-preview.32\lib\netnano1.0\mscorlib.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.CoreLibrary.2.0.0-preview.33\lib\netnano1.0\mscorlib.dll</HintPath>
     </Reference>
   </ItemGroup>
   <Import Project="$(NanoFrameworkProjectSystemPath)NFProjectSystem.CSharp.targets" Condition="Exists('$(NanoFrameworkProjectSystemPath)NFProjectSystem.CSharp.targets')" />
diff --git a/System.Device.I2s/packages.config b/System.Device.I2s/packages.config
index 852c63f..eb8675c 100644
--- a/System.Device.I2s/packages.config
+++ b/System.Device.I2s/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.32" targetFramework="netnano1.0" />
+  <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.33" 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.I2s/packages.lock.json b/System.Device.I2s/packages.lock.json
index d3b4e4e..f3f8f2e 100644
--- a/System.Device.I2s/packages.lock.json
+++ b/System.Device.I2s/packages.lock.json
@@ -4,9 +4,9 @@
     ".NETnanoFramework,Version=v1.0": {
       "nanoFramework.CoreLibrary": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.32, 2.0.0-preview.32]",
-        "resolved": "2.0.0-preview.32",
-        "contentHash": "DZ0CI92bJCTQ+2pGJiRxcqYEzmjMppg2elFZEZCGB6kUPjUoGV8o+NnFb5bn2X0Nl+b+8Wq5BLzGBbn8C05oKQ=="
+        "requested": "[2.0.0-preview.33, 2.0.0-preview.33]",
+        "resolved": "2.0.0-preview.33",
+        "contentHash": "VVr+TmThdBt9zzXFzFewB5GUsNm2BE8+/3OtaCiJVg76v0Wr87A0Mi6R74hm78otfIhPJ66aPaRd+fA23dmJjQ=="
       },
       "Nerdbank.GitVersioning": {
         "type": "Direct",
diff --git a/nanoFramework.System.Device.I2s.nuspec b/nanoFramework.System.Device.I2s.nuspec
index 13e6db1..6331317 100644
--- a/nanoFramework.System.Device.I2s.nuspec
+++ b/nanoFramework.System.Device.I2s.nuspec
@@ -19,7 +19,7 @@
 This package requires a target with System.Device.I2s v$nativeVersion$ (checksum $checksum$).</description>
     <tags>nanoFramework C# csharp netmf netnf System.Device.I2s</tags>
     <dependencies>
-      <dependency id="nanoFramework.CoreLibrary" version="2.0.0-preview.32" />
+      <dependency id="nanoFramework.CoreLibrary" version="2.0.0-preview.33" />
     </dependencies>
   </metadata>
   <files>