diff --git a/nanoFramework.Json.Benchmark/nanoFramework.Json.Benchmark.nfproj b/nanoFramework.Json.Benchmark/nanoFramework.Json.Benchmark.nfproj
index 591a9bb2..7a0afad2 100644
--- a/nanoFramework.Json.Benchmark/nanoFramework.Json.Benchmark.nfproj
+++ b/nanoFramework.Json.Benchmark/nanoFramework.Json.Benchmark.nfproj
@@ -43,8 +43,8 @@
     <Reference Include="nanoFramework.Runtime.Native, Version=1.6.12.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
       <HintPath>..\packages\nanoFramework.Runtime.Native.1.6.12\lib\nanoFramework.Runtime.Native.dll</HintPath>
     </Reference>
-    <Reference Include="nanoFramework.System.Collections, Version=1.5.31.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.System.Collections.1.5.31\lib\nanoFramework.System.Collections.dll</HintPath>
+    <Reference Include="nanoFramework.System.Collections, Version=1.5.45.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\packages\nanoFramework.System.Collections.1.5.45\lib\nanoFramework.System.Collections.dll</HintPath>
     </Reference>
     <Reference Include="nanoFramework.System.Text, Version=1.2.54.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
       <HintPath>..\packages\nanoFramework.System.Text.1.2.54\lib\nanoFramework.System.Text.dll</HintPath>
diff --git a/nanoFramework.Json.Benchmark/packages.config b/nanoFramework.Json.Benchmark/packages.config
index 33ea5d7b..5eb3e2ee 100644
--- a/nanoFramework.Json.Benchmark/packages.config
+++ b/nanoFramework.Json.Benchmark/packages.config
@@ -4,7 +4,7 @@
   <package id="nanoFramework.CoreLibrary" version="1.15.5" targetFramework="netnano1.0" />
   <package id="nanoFramework.Logging" version="1.1.108" targetFramework="netnano1.0" />
   <package id="nanoFramework.Runtime.Native" version="1.6.12" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Collections" version="1.5.31" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Collections" version="1.5.45" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Diagnostics.Stopwatch" version="1.2.628" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.IO.Streams" version="1.1.59" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Text" version="1.2.54" targetFramework="netnano1.0" />
diff --git a/nanoFramework.Json.Benchmark/packages.lock.json b/nanoFramework.Json.Benchmark/packages.lock.json
index d79ca68b..96bef435 100644
--- a/nanoFramework.Json.Benchmark/packages.lock.json
+++ b/nanoFramework.Json.Benchmark/packages.lock.json
@@ -28,9 +28,9 @@
       },
       "nanoFramework.System.Collections": {
         "type": "Direct",
-        "requested": "[1.5.31, 1.5.31]",
-        "resolved": "1.5.31",
-        "contentHash": "q7G0BHkbhUzpUJiOQNlZZDSMcZEU2/QJBDiSEQAF23wOya4EBaCXS74jAVcEfkHBgOkF413jKZq5vldpjqUfUw=="
+        "requested": "[1.5.45, 1.5.45]",
+        "resolved": "1.5.45",
+        "contentHash": "dil6zTz67ACEboy5aWib+lcK+v5eOdvChow3UoZjPdH/fsHsHl26D6/OmQKp+KPVdi5/59WUM5InFB4F5FEQfQ=="
       },
       "nanoFramework.System.Diagnostics.Stopwatch": {
         "type": "Direct",
diff --git a/nanoFramework.Json.Test/nanoFramework.Json.Test.nfproj b/nanoFramework.Json.Test/nanoFramework.Json.Test.nfproj
index db2d641d..25364845 100644
--- a/nanoFramework.Json.Test/nanoFramework.Json.Test.nfproj
+++ b/nanoFramework.Json.Test/nanoFramework.Json.Test.nfproj
@@ -70,8 +70,8 @@
     <Reference Include="mscorlib">
       <HintPath>..\packages\nanoFramework.CoreLibrary.1.15.5\lib\mscorlib.dll</HintPath>
     </Reference>
-    <Reference Include="nanoFramework.System.Collections">
-      <HintPath>..\packages\nanoFramework.System.Collections.1.5.31\lib\nanoFramework.System.Collections.dll</HintPath>
+    <Reference Include="nanoFramework.System.Collections, Version=1.5.45.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\packages\nanoFramework.System.Collections.1.5.45\lib\nanoFramework.System.Collections.dll</HintPath>
     </Reference>
     <Reference Include="nanoFramework.System.Text">
       <HintPath>..\packages\nanoFramework.System.Text.1.2.54\lib\nanoFramework.System.Text.dll</HintPath>
diff --git a/nanoFramework.Json.Test/packages.config b/nanoFramework.Json.Test/packages.config
index d9568fe7..f6143ca8 100644
--- a/nanoFramework.Json.Test/packages.config
+++ b/nanoFramework.Json.Test/packages.config
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="nanoFramework.CoreLibrary" version="1.15.5" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Collections" version="1.5.31" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Collections" version="1.5.45" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.IO.Streams" version="1.1.59" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Text" version="1.2.54" targetFramework="netnano1.0" />
   <package id="nanoFramework.TestFramework" version="2.1.112" targetFramework="netnano1.0" developmentDependency="true" />
diff --git a/nanoFramework.Json.Test/packages.lock.json b/nanoFramework.Json.Test/packages.lock.json
index f1f5f284..a2212805 100644
--- a/nanoFramework.Json.Test/packages.lock.json
+++ b/nanoFramework.Json.Test/packages.lock.json
@@ -10,9 +10,9 @@
       },
       "nanoFramework.System.Collections": {
         "type": "Direct",
-        "requested": "[1.5.31, 1.5.31]",
-        "resolved": "1.5.31",
-        "contentHash": "q7G0BHkbhUzpUJiOQNlZZDSMcZEU2/QJBDiSEQAF23wOya4EBaCXS74jAVcEfkHBgOkF413jKZq5vldpjqUfUw=="
+        "requested": "[1.5.45, 1.5.45]",
+        "resolved": "1.5.45",
+        "contentHash": "dil6zTz67ACEboy5aWib+lcK+v5eOdvChow3UoZjPdH/fsHsHl26D6/OmQKp+KPVdi5/59WUM5InFB4F5FEQfQ=="
       },
       "nanoFramework.System.IO.Streams": {
         "type": "Direct",
diff --git a/nanoFramework.Json.nuspec b/nanoFramework.Json.nuspec
index 2aed2321..f9ac792b 100644
--- a/nanoFramework.Json.nuspec
+++ b/nanoFramework.Json.nuspec
@@ -19,7 +19,7 @@
     <tags>nanoFramework C# csharp netmf netnf json</tags>
     <dependencies>
       <dependency id="nanoFramework.CoreLibrary" version="1.15.5" />
-      <dependency id="nanoFramework.System.Collections" version="1.5.31" />
+      <dependency id="nanoFramework.System.Collections" version="1.5.45" />
       <dependency id="nanoFramework.System.IO.Streams" version="1.1.59" />
     </dependencies>
   </metadata>
diff --git a/nanoFramework.Json/nanoFramework.Json.nfproj b/nanoFramework.Json/nanoFramework.Json.nfproj
index 280f2533..7ac8381c 100644
--- a/nanoFramework.Json/nanoFramework.Json.nfproj
+++ b/nanoFramework.Json/nanoFramework.Json.nfproj
@@ -77,8 +77,8 @@
     <Reference Include="mscorlib, Version=1.15.6.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
       <HintPath>..\packages\nanoFramework.CoreLibrary.1.15.5\lib\mscorlib.dll</HintPath>
     </Reference>
-    <Reference Include="nanoFramework.System.Collections, Version=1.5.31.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.System.Collections.1.5.31\lib\nanoFramework.System.Collections.dll</HintPath>
+    <Reference Include="nanoFramework.System.Collections, Version=1.5.45.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\packages\nanoFramework.System.Collections.1.5.45\lib\nanoFramework.System.Collections.dll</HintPath>
     </Reference>
     <Reference Include="nanoFramework.System.Text, Version=1.2.54.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
       <HintPath>..\packages\nanoFramework.System.Text.1.2.54\lib\nanoFramework.System.Text.dll</HintPath>
diff --git a/nanoFramework.Json/packages.config b/nanoFramework.Json/packages.config
index 344579a4..d835478d 100644
--- a/nanoFramework.Json/packages.config
+++ b/nanoFramework.Json/packages.config
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="nanoFramework.CoreLibrary" version="1.15.5" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.Collections" version="1.5.31" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.Collections" version="1.5.45" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.IO.Streams" version="1.1.59" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Text" version="1.2.54" targetFramework="netnano1.0" />
   <package id="Nerdbank.GitVersioning" version="3.6.143" targetFramework="netnano1.0" developmentDependency="true" />
diff --git a/nanoFramework.Json/packages.lock.json b/nanoFramework.Json/packages.lock.json
index 9279a6e0..2a85de7c 100644
--- a/nanoFramework.Json/packages.lock.json
+++ b/nanoFramework.Json/packages.lock.json
@@ -10,9 +10,9 @@
       },
       "nanoFramework.System.Collections": {
         "type": "Direct",
-        "requested": "[1.5.31, 1.5.31]",
-        "resolved": "1.5.31",
-        "contentHash": "q7G0BHkbhUzpUJiOQNlZZDSMcZEU2/QJBDiSEQAF23wOya4EBaCXS74jAVcEfkHBgOkF413jKZq5vldpjqUfUw=="
+        "requested": "[1.5.45, 1.5.45]",
+        "resolved": "1.5.45",
+        "contentHash": "dil6zTz67ACEboy5aWib+lcK+v5eOdvChow3UoZjPdH/fsHsHl26D6/OmQKp+KPVdi5/59WUM5InFB4F5FEQfQ=="
       },
       "nanoFramework.System.IO.Streams": {
         "type": "Direct",