diff --git a/nanoFramework.System.Text.Benchmark/nanoFramework.System.Text.Benchmark.nfproj b/nanoFramework.System.Text.Benchmark/nanoFramework.System.Text.Benchmark.nfproj
index 92f013c..4b91150 100644
--- a/nanoFramework.System.Text.Benchmark/nanoFramework.System.Text.Benchmark.nfproj
+++ b/nanoFramework.System.Text.Benchmark/nanoFramework.System.Text.Benchmark.nfproj
@@ -35,14 +35,14 @@
     <Reference Include="nanoFramework.Logging, Version=1.1.161.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
       <HintPath>..\packages\nanoFramework.Logging.1.1.161\lib\nanoFramework.Logging.dll</HintPath>
     </Reference>
-    <Reference Include="nanoFramework.Runtime.Native">
-      <HintPath>..\packages\nanoFramework.Runtime.Native.2.0.0-preview.15\lib\nanoFramework.Runtime.Native.dll</HintPath>
+    <Reference Include="nanoFramework.Runtime.Native, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\packages\nanoFramework.Runtime.Native.2.0.0-preview.17\lib\nanoFramework.Runtime.Native.dll</HintPath>
     </Reference>
-    <Reference Include="nanoFramework.System.Collections">
-      <HintPath>..\packages\nanoFramework.System.Collections.2.0.0-preview.3\lib\nanoFramework.System.Collections.dll</HintPath>
+    <Reference Include="nanoFramework.System.Collections, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\packages\nanoFramework.System.Collections.2.0.0-preview.5\lib\nanoFramework.System.Collections.dll</HintPath>
     </Reference>
     <Reference Include="nanoFramework.System.Text, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.System.Text.2.0.0-preview.1\lib\nanoFramework.System.Text.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.Text.2.0.0-preview.3\lib\nanoFramework.System.Text.dll</HintPath>
     </Reference>
     <Reference Include="System.Diagnostics.Stopwatch, Version=1.2.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
       <HintPath>..\packages\nanoFramework.System.Diagnostics.Stopwatch.1.2.862\lib\System.Diagnostics.Stopwatch.dll</HintPath>
diff --git a/nanoFramework.System.Text.Benchmark/packages.config b/nanoFramework.System.Text.Benchmark/packages.config
index bea2169..7c9943a 100644
--- a/nanoFramework.System.Text.Benchmark/packages.config
+++ b/nanoFramework.System.Text.Benchmark/packages.config
@@ -3,8 +3,8 @@
   <package id="nanoFramework.Benchmark" version="1.0.113" targetFramework="netnano1.0" />
   <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.30" targetFramework="netnano1.0" />
   <package id="nanoFramework.Logging" version="1.1.161" targetFramework="netnano1.0" />
-  <package id="nanoFramework.Runtime.Native" version="2.0.0-preview.15" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Collections" version="2.0.0-preview.3" targetFramework="netnano1.0" />
+  <package id="nanoFramework.Runtime.Native" version="2.0.0-preview.17" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Collections" version="2.0.0-preview.5" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Diagnostics.Stopwatch" version="1.2.862" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Text" version="2.0.0-preview.1" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Text" version="2.0.0-preview.3" targetFramework="netnano1.0" />
 </packages>
\ No newline at end of file
diff --git a/nanoFramework.System.Text.Benchmark/packages.lock.json b/nanoFramework.System.Text.Benchmark/packages.lock.json
index c44ad3d..52a745b 100644
--- a/nanoFramework.System.Text.Benchmark/packages.lock.json
+++ b/nanoFramework.System.Text.Benchmark/packages.lock.json
@@ -22,15 +22,15 @@
       },
       "nanoFramework.Runtime.Native": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.15, 2.0.0-preview.15]",
-        "resolved": "2.0.0-preview.15",
-        "contentHash": "e9Qc6Q2fOQgksQSusoVlcJuhDl0Oua9X80jrN6VVx2mo5O+zqzei0Ljl5oUWToGTBz7QF8lOPj+uOR81/eX6hA=="
+        "requested": "[2.0.0-preview.17, 2.0.0-preview.17]",
+        "resolved": "2.0.0-preview.17",
+        "contentHash": "XkGNYxteY3hXDrKrMuWWejSgWUS4qgkKz+Gc6a8IFgInNuVdaPsdl2cHyCwnHQzzUp454GBZKzvq+YayUGws4A=="
       },
       "nanoFramework.System.Collections": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.3, 2.0.0-preview.3]",
-        "resolved": "2.0.0-preview.3",
-        "contentHash": "G8q2psrcNTzQJvxtkGc3XW5fyozE/rx9zaZDaoEi1eZqE2ncSguyqBrMxTuQRgFJaYONA6ir5joNl0JWYAB1Gg=="
+        "requested": "[2.0.0-preview.5, 2.0.0-preview.5]",
+        "resolved": "2.0.0-preview.5",
+        "contentHash": "Ll+n1CU45UYpIkbEppTRRke4VGmNbq0qBmPwtRGsJbqXNi/jYG+t2huTIinpHQXF2r0nhKUY3BLrEX9ZYNK7Sw=="
       },
       "nanoFramework.System.Diagnostics.Stopwatch": {
         "type": "Direct",
@@ -40,9 +40,9 @@
       },
       "nanoFramework.System.Text": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.1, 2.0.0-preview.1]",
-        "resolved": "2.0.0-preview.1",
-        "contentHash": "+FZMSc0QPp6GbU63WXCmryKtd/zEkmH51daIV3UIV3t9CUHSg8sK7rkASVrlQ7kGYbgQl02IDbIB/r1hIK1MLw=="
+        "requested": "[2.0.0-preview.3, 2.0.0-preview.3]",
+        "resolved": "2.0.0-preview.3",
+        "contentHash": "9xP5PBUERm2c5cmY4YPHsnmB/4tk6onfHQBd8zkY2kRKq5oftTpN/P5BSP+gUUy4UfxO/Z4vSKmeCDrDJGDMzQ=="
       }
     }
   }