diff --git a/nanoFramework.System.Text.Benchmark/nanoFramework.System.Text.Benchmark.nfproj b/nanoFramework.System.Text.Benchmark/nanoFramework.System.Text.Benchmark.nfproj
index 4a7837f..c424dc4 100644
--- a/nanoFramework.System.Text.Benchmark/nanoFramework.System.Text.Benchmark.nfproj
+++ b/nanoFramework.System.Text.Benchmark/nanoFramework.System.Text.Benchmark.nfproj
@@ -33,19 +33,19 @@
       <HintPath>..\packages\nanoFramework.Benchmark.1.0.113\lib\nanoFramework.Benchmark.dll</HintPath>
     </Reference>
     <Reference Include="nanoFramework.Logging, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.Logging.2.0.0-preview.3\lib\netnano1.0\nanoFramework.Logging.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.Logging.2.0.0-preview.5\lib\netnano1.0\nanoFramework.Logging.dll</HintPath>
     </Reference>
     <Reference Include="nanoFramework.Runtime.Native, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.Runtime.Native.2.0.0-preview.20\lib\nanoFramework.Runtime.Native.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.Runtime.Native.2.0.0-preview.22\lib\netnano1.0\nanoFramework.Runtime.Native.dll</HintPath>
     </Reference>
     <Reference Include="nanoFramework.System.Collections, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.System.Collections.2.0.0-preview.8\lib\nanoFramework.System.Collections.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.Collections.2.0.0-preview.11\lib\netnano1.0\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.8\lib\nanoFramework.System.Text.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.Text.2.0.0-preview.13\lib\netnano1.0\nanoFramework.System.Text.dll</HintPath>
     </Reference>
     <Reference Include="System.Diagnostics.Stopwatch, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.System.Diagnostics.Stopwatch.2.0.0-preview.4\lib\System.Diagnostics.Stopwatch.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.Diagnostics.Stopwatch.2.0.0-preview.34\lib\System.Diagnostics.Stopwatch.dll</HintPath>
     </Reference>
   </ItemGroup>
   <ItemGroup>
diff --git a/nanoFramework.System.Text.Benchmark/packages.config b/nanoFramework.System.Text.Benchmark/packages.config
index 4fcee9a..52e6a1a 100644
--- a/nanoFramework.System.Text.Benchmark/packages.config
+++ b/nanoFramework.System.Text.Benchmark/packages.config
@@ -2,9 +2,9 @@
 <packages>
   <package id="nanoFramework.Benchmark" version="1.0.113" targetFramework="netnano1.0" />
   <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.39" targetFramework="netnano1.0" />
-  <package id="nanoFramework.Logging" version="2.0.0-preview.3" targetFramework="netnano1.0" />
-  <package id="nanoFramework.Runtime.Native" version="2.0.0-preview.20" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Collections" version="2.0.0-preview.8" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Diagnostics.Stopwatch" version="2.0.0-preview.4" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Text" version="2.0.0-preview.8" targetFramework="netnano1.0" />
+  <package id="nanoFramework.Logging" version="2.0.0-preview.5" targetFramework="netnano1.0" />
+  <package id="nanoFramework.Runtime.Native" version="2.0.0-preview.22" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Collections" version="2.0.0-preview.11" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Diagnostics.Stopwatch" version="2.0.0-preview.34" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Text" version="2.0.0-preview.13" 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 924411a..8daa750 100644
--- a/nanoFramework.System.Text.Benchmark/packages.lock.json
+++ b/nanoFramework.System.Text.Benchmark/packages.lock.json
@@ -16,33 +16,33 @@
       },
       "nanoFramework.Logging": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.3, 2.0.0-preview.3]",
-        "resolved": "2.0.0-preview.3",
-        "contentHash": "1WBGfWdmjguaBIxoYIggptZp1zFpp4qlT6OsavHW7agpMsrpnsBg2jZQ9axs4jrntujUsg8rbw5VB8HdFGPkvg=="
+        "requested": "[2.0.0-preview.5, 2.0.0-preview.5]",
+        "resolved": "2.0.0-preview.5",
+        "contentHash": "o1jLriHKN9bQNiLiPJ5WkJzN6fu5M18WXfq2UOEKROneWmaHgGm2d62Np/bfzO/KiMm38yNpjFGS2WbmhkJ/9w=="
       },
       "nanoFramework.Runtime.Native": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.20, 2.0.0-preview.20]",
-        "resolved": "2.0.0-preview.20",
-        "contentHash": "TwNeWN8eYZ0qtMkQ5UPPaYsq6l963SUBSKerOgoWE13DEk3drQPZqF+uI7VuWLmvoSFgQ4FYiwDFpexC1p8m3A=="
+        "requested": "[2.0.0-preview.22, 2.0.0-preview.22]",
+        "resolved": "2.0.0-preview.22",
+        "contentHash": "nOOiiosvFhMDl1/HZd0rdHqfDCyWWFBt5AzyeCowlP0nV9KVu9ZyIPtbVLERsIOXw8z8CNIN9xhI+p3pzjpwJg=="
       },
       "nanoFramework.System.Collections": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.8, 2.0.0-preview.8]",
-        "resolved": "2.0.0-preview.8",
-        "contentHash": "IGzV8Q9vf6Uk6dj6oL2e4acTA4SK/zkAA53yrth+NfgkKuel8fzp1FhndFjDsTu97naqVaNtbMUlhJwXY0wqKQ=="
+        "requested": "[2.0.0-preview.11, 2.0.0-preview.11]",
+        "resolved": "2.0.0-preview.11",
+        "contentHash": "NVpAXchds3s2Y8BSKj1TBeo0D1IF/bGYP4AUBphW8UeOIa1uF2a1tST8pCgv1w2NdgvHcO306rzRP33XNS5YMw=="
       },
       "nanoFramework.System.Diagnostics.Stopwatch": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.4, 2.0.0-preview.4]",
-        "resolved": "2.0.0-preview.4",
-        "contentHash": "jeP7YdYQq7DVtlE5vqZgRq2n/96HZFZUwEfZWXjSuFJ1Apqpl+lidB+AJ/6DN6P7VEwT6CXYTlHBv0vfCKbNNQ=="
+        "requested": "[2.0.0-preview.34, 2.0.0-preview.34]",
+        "resolved": "2.0.0-preview.34",
+        "contentHash": "wOO2mS6Jle7KS5rg6+LRQBUNVSHWVCmvXDIaVQ3C5XH/qPUyyWwsg6oDql8wNJQUsit3N15ogt8ffX08hsa82g=="
       },
       "nanoFramework.System.Text": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.8, 2.0.0-preview.8]",
-        "resolved": "2.0.0-preview.8",
-        "contentHash": "dvaXLJo+X68BVWgXssjk0XXJUwQNwA9h0+wbDgfbE2Hc3/pKljhAvuluD8n4W5MZYJ6YI3I/BhPreBjW7W2Fvw=="
+        "requested": "[2.0.0-preview.13, 2.0.0-preview.13]",
+        "resolved": "2.0.0-preview.13",
+        "contentHash": "kTEKvplebAWeA7j4jb9adST6dxH28Q6c99+Jms6p8cMFxlrUoWhL/GdEiPaPnJSVy1XtsgIfh38WbR757qF8yw=="
       }
     }
   }