diff --git a/Tests/System.IO.HashingTests/System.IO.HashingTests.nfproj b/Tests/System.IO.HashingTests/System.IO.HashingTests.nfproj
index 79b4459..cf59794 100644
--- a/Tests/System.IO.HashingTests/System.IO.HashingTests.nfproj
+++ b/Tests/System.IO.HashingTests/System.IO.HashingTests.nfproj
@@ -35,7 +35,7 @@
       <HintPath>..\..\packages\nanoFramework.CoreLibrary.2.0.0-preview.35\lib\netnano1.0\mscorlib.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.6\lib\nanoFramework.System.Text.dll</HintPath>
+      <HintPath>..\..\packages\nanoFramework.System.Text.2.0.0-preview.8\lib\nanoFramework.System.Text.dll</HintPath>
     </Reference>
     <Reference Include="nanoFramework.TestFramework">
       <HintPath>..\..\packages\nanoFramework.TestFramework.4.0.0-preview.47\lib\nanoFramework.TestFramework.dll</HintPath>
diff --git a/Tests/System.IO.HashingTests/packages.config b/Tests/System.IO.HashingTests/packages.config
index d10a451..e922c60 100644
--- a/Tests/System.IO.HashingTests/packages.config
+++ b/Tests/System.IO.HashingTests/packages.config
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.35" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Text" version="2.0.0-preview.6" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Text" version="2.0.0-preview.8" targetFramework="netnano1.0" />
   <package id="nanoFramework.TestFramework" version="4.0.0-preview.47" targetFramework="netnano1.0" developmentDependency="true" />
 </packages>
\ No newline at end of file
diff --git a/Tests/System.IO.HashingTests/packages.lock.json b/Tests/System.IO.HashingTests/packages.lock.json
index 706e6fc..8309eea 100644
--- a/Tests/System.IO.HashingTests/packages.lock.json
+++ b/Tests/System.IO.HashingTests/packages.lock.json
@@ -10,9 +10,9 @@
       },
       "nanoFramework.System.Text": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.6, 2.0.0-preview.6]",
-        "resolved": "2.0.0-preview.6",
-        "contentHash": "/A9M9sGW8rsAg6YF81quWV9MvQseKWZodf+pK6lp3Bw12NkXwgwiAo1+9geJQFwDsqi2L9BcLb3IIs/BerGTbQ=="
+        "requested": "[2.0.0-preview.8, 2.0.0-preview.8]",
+        "resolved": "2.0.0-preview.8",
+        "contentHash": "dvaXLJo+X68BVWgXssjk0XXJUwQNwA9h0+wbDgfbE2Hc3/pKljhAvuluD8n4W5MZYJ6YI3I/BhPreBjW7W2Fvw=="
       },
       "nanoFramework.TestFramework": {
         "type": "Direct",