diff --git a/System.Device.I2c/System.Device.I2c.nfproj b/System.Device.I2c/System.Device.I2c.nfproj
index 8151548..71e2fbe 100644
--- a/System.Device.I2c/System.Device.I2c.nfproj
+++ b/System.Device.I2c/System.Device.I2c.nfproj
@@ -55,8 +55,8 @@
     <None Include="packages.lock.json" />
   </ItemGroup>
   <ItemGroup>
-    <Reference Include="mscorlib, Version=1.14.3.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.CoreLibrary.1.14.2\lib\mscorlib.dll</HintPath>
+    <Reference Include="mscorlib, Version=1.15.6.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\packages\nanoFramework.CoreLibrary.1.15.5\lib\mscorlib.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
diff --git a/System.Device.I2c/packages.config b/System.Device.I2c/packages.config
index 75b7f06..d60f807 100644
--- a/System.Device.I2c/packages.config
+++ b/System.Device.I2c/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="nanoFramework.CoreLibrary" version="1.14.2" targetFramework="netnano1.0" />
+  <package id="nanoFramework.CoreLibrary" version="1.15.5" targetFramework="netnano1.0" />
   <package id="Nerdbank.GitVersioning" version="3.6.133" developmentDependency="true" targetFramework="netnano1.0" />
 </packages>
\ No newline at end of file
diff --git a/System.Device.I2c/packages.lock.json b/System.Device.I2c/packages.lock.json
index b80edcb..33ef693 100644
--- a/System.Device.I2c/packages.lock.json
+++ b/System.Device.I2c/packages.lock.json
@@ -4,9 +4,9 @@
     ".NETnanoFramework,Version=v1.0": {
       "nanoFramework.CoreLibrary": {
         "type": "Direct",
-        "requested": "[1.14.2, 1.14.2]",
-        "resolved": "1.14.2",
-        "contentHash": "j1mrz4mitl5LItvmHMsw1aHzCAfvTTgIkRxA0mhs5mSpctJ/BBcuNwua5j3MspfRNKreCQPy/qZy/D9ADLL/PA=="
+        "requested": "[1.15.5, 1.15.5]",
+        "resolved": "1.15.5",
+        "contentHash": "u2+GvAp1uxLrGdILACAZy+EVKOs28EQ52j8Lz7599egXZ3GBGejjnR2ofhjMQwzrJLlgtyrsx8nSLngDfJNsAg=="
       },
       "Nerdbank.GitVersioning": {
         "type": "Direct",
diff --git a/nanoFramework.System.Device.I2c.nuspec b/nanoFramework.System.Device.I2c.nuspec
index 6565cb3..a6a8d9c 100644
--- a/nanoFramework.System.Device.I2c.nuspec
+++ b/nanoFramework.System.Device.I2c.nuspec
@@ -19,7 +19,7 @@
 This package requires a target with System.Device.I2c v$nativeVersion$ (checksum $checksum$).</description>
     <tags>nanoFramework C# csharp netmf netnf I2c</tags>
     <dependencies>
-      <dependency id="nanoFramework.CoreLibrary" version="1.14.2" />
+      <dependency id="nanoFramework.CoreLibrary" version="1.15.5" />
     </dependencies>
   </metadata>
   <files>