diff --git a/nanoFramework.System.Text.Benchmark/nanoFramework.System.Text.Benchmark.nfproj b/nanoFramework.System.Text.Benchmark/nanoFramework.System.Text.Benchmark.nfproj
index f4a4b42..bed9191 100644
--- a/nanoFramework.System.Text.Benchmark/nanoFramework.System.Text.Benchmark.nfproj
+++ b/nanoFramework.System.Text.Benchmark/nanoFramework.System.Text.Benchmark.nfproj
@@ -39,7 +39,7 @@
       <HintPath>..\packages\nanoFramework.Runtime.Native.2.0.0-preview.29\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.15\lib\netnano1.0\nanoFramework.System.Collections.dll</HintPath>
+      <HintPath>..\packages\nanoFramework.System.Collections.2.0.0-preview.24\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.37\lib\netnano1.0\nanoFramework.System.Text.dll</HintPath>
diff --git a/nanoFramework.System.Text.Benchmark/packages.config b/nanoFramework.System.Text.Benchmark/packages.config
index 44de4d2..5d67752 100644
--- a/nanoFramework.System.Text.Benchmark/packages.config
+++ b/nanoFramework.System.Text.Benchmark/packages.config
@@ -4,7 +4,7 @@
   <package id="nanoFramework.CoreLibrary" version="2.0.0-preview.63" targetFramework="netnano1.0" />
   <package id="nanoFramework.Logging" version="2.0.0-preview.39" targetFramework="netnano1.0" />
   <package id="nanoFramework.Runtime.Native" version="2.0.0-preview.29" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Collections" version="2.0.0-preview.15" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Collections" version="2.0.0-preview.24" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Diagnostics.Stopwatch" version="2.0.0-preview.82" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Text" version="2.0.0-preview.37" 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 58ed935..d41a3f8 100644
--- a/nanoFramework.System.Text.Benchmark/packages.lock.json
+++ b/nanoFramework.System.Text.Benchmark/packages.lock.json
@@ -28,9 +28,9 @@
       },
       "nanoFramework.System.Collections": {
         "type": "Direct",
-        "requested": "[2.0.0-preview.15, 2.0.0-preview.15]",
-        "resolved": "2.0.0-preview.15",
-        "contentHash": "yyTSBujvtMHe5IYK26Q4Ys3o19pmrzhYDUzRHgnKFZNcQYRUIfd1C9Vt2UBDPF3hjHQnIVtrnry+7Pp/U00U/g=="
+        "requested": "[2.0.0-preview.24, 2.0.0-preview.24]",
+        "resolved": "2.0.0-preview.24",
+        "contentHash": "R9H0vjkT4DGVM7bu9e53EHukRU2iebO2pqjcfPEJlUSyIytexpkvxdTgSVmfLjv4COr8jBq7jMvkdr0NiOhxjA=="
       },
       "nanoFramework.System.Diagnostics.Stopwatch": {
         "type": "Direct",