diff --git a/devices/CharacterLcd/CharacterLcd.nfproj b/devices/CharacterLcd/CharacterLcd.nfproj
index 6020482c04..8ecf5a0536 100644
--- a/devices/CharacterLcd/CharacterLcd.nfproj
+++ b/devices/CharacterLcd/CharacterLcd.nfproj
@@ -111,8 +111,8 @@
     <Reference Include="System.Diagnostics.Stopwatch, Version=1.2.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
       <HintPath>packages\nanoFramework.System.Diagnostics.Stopwatch.1.2.670\lib\System.Diagnostics.Stopwatch.dll</HintPath>
     </Reference>
-    <Reference Include="System.IO.FileSystem, Version=1.1.54.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>packages\nanoFramework.System.IO.FileSystem.1.1.54\lib\System.IO.FileSystem.dll</HintPath>
+    <Reference Include="System.IO.FileSystem, Version=1.1.66.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>packages\nanoFramework.System.IO.FileSystem.1.1.66\lib\System.IO.FileSystem.dll</HintPath>
     </Reference>
     <Reference Include="System.IO.Streams, Version=1.1.59.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
       <HintPath>packages\nanoFramework.System.IO.Streams.1.1.59\lib\System.IO.Streams.dll</HintPath>
diff --git a/devices/CharacterLcd/CharacterLcd.nuspec b/devices/CharacterLcd/CharacterLcd.nuspec
index 46f031f8a0..f5c235fc17 100644
--- a/devices/CharacterLcd/CharacterLcd.nuspec
+++ b/devices/CharacterLcd/CharacterLcd.nuspec
@@ -31,7 +31,7 @@
       <dependency id="nanoFramework.System.Device.Spi" version="1.3.52" />
       <dependency id="nanoFramework.System.Diagnostics.Stopwatch" version="1.2.670" />
       <dependency id="nanoFramework.Graphics.Core" version="1.2.22" />
-      <dependency id="nanoFramework.System.IO.FileSystem" version="1.1.54" />
+      <dependency id="nanoFramework.System.IO.FileSystem" version="1.1.66" />
       <dependency id="nanoFramework.System.IO.Streams" version="1.1.59" />
       <dependency id="nanoFramework.System.Math" version="1.5.43" />
       <dependency id="nanoFramework.System.Text" version="1.2.54" />
diff --git a/devices/CharacterLcd/packages.config b/devices/CharacterLcd/packages.config
index b0dcf88e5c..ca809b3835 100644
--- a/devices/CharacterLcd/packages.config
+++ b/devices/CharacterLcd/packages.config
@@ -12,7 +12,7 @@
   <package id="nanoFramework.System.Device.I2c" version="1.1.16" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Device.Spi" version="1.3.52" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Diagnostics.Stopwatch" version="1.2.670" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.IO.FileSystem" version="1.1.54" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.IO.FileSystem" version="1.1.66" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.IO.Streams" version="1.1.59" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Math" version="1.5.43" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Runtime" version="1.0.27" targetFramework="netnano1.0" />
diff --git a/devices/CharacterLcd/packages.lock.json b/devices/CharacterLcd/packages.lock.json
index 085ad762de..7080e45dae 100644
--- a/devices/CharacterLcd/packages.lock.json
+++ b/devices/CharacterLcd/packages.lock.json
@@ -76,9 +76,9 @@
       },
       "nanoFramework.System.IO.FileSystem": {
         "type": "Direct",
-        "requested": "[1.1.54, 1.1.54]",
-        "resolved": "1.1.54",
-        "contentHash": "K1QPNbrksqw4yjQ/GXgz1Q0hZBi3zi1A8/FUAhYsq8bESVNUFjNpvxHPSDw1gV8DzEg5jH5e9Z2VrAncTQogFQ=="
+        "requested": "[1.1.66, 1.1.66]",
+        "resolved": "1.1.66",
+        "contentHash": "bQIWR23R3UHTO7+icxqIvb07qHs1uI7kj+kjYNf+NTfUHunerfZ4v79+pcSudCR1p5bJHD8GVeV2Hyxl4SZAFw=="
       },
       "nanoFramework.System.IO.Streams": {
         "type": "Direct",
diff --git a/devices/CharacterLcd/samples/CharacterLcd.Samples.nfproj b/devices/CharacterLcd/samples/CharacterLcd.Samples.nfproj
index 8039cce426..366fbbf71e 100644
--- a/devices/CharacterLcd/samples/CharacterLcd.Samples.nfproj
+++ b/devices/CharacterLcd/samples/CharacterLcd.Samples.nfproj
@@ -68,8 +68,8 @@
     <Reference Include="System.Diagnostics.Stopwatch, Version=1.2.0.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
       <HintPath>..\packages\nanoFramework.System.Diagnostics.Stopwatch.1.2.670\lib\System.Diagnostics.Stopwatch.dll</HintPath>
     </Reference>
-    <Reference Include="System.IO.FileSystem, Version=1.1.54.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.System.IO.FileSystem.1.1.54\lib\System.IO.FileSystem.dll</HintPath>
+    <Reference Include="System.IO.FileSystem, Version=1.1.66.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\packages\nanoFramework.System.IO.FileSystem.1.1.66\lib\System.IO.FileSystem.dll</HintPath>
     </Reference>
     <Reference Include="System.IO.Streams, Version=1.1.59.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
       <HintPath>..\packages\nanoFramework.System.IO.Streams.1.1.59\lib\System.IO.Streams.dll</HintPath>
diff --git a/devices/CharacterLcd/samples/packages.config b/devices/CharacterLcd/samples/packages.config
index acb2e33d42..9f6b21c5ac 100644
--- a/devices/CharacterLcd/samples/packages.config
+++ b/devices/CharacterLcd/samples/packages.config
@@ -13,7 +13,7 @@
   <package id="nanoFramework.System.Device.I2c" version="1.1.16" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Device.Spi" version="1.3.52" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Diagnostics.Stopwatch" version="1.2.670" targetFramework="netnano1.0" />
-  <package id="nanoFramework.System.IO.FileSystem" version="1.1.54" targetFramework="netnano1.0" />
+  <package id="nanoFramework.System.IO.FileSystem" version="1.1.66" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.IO.Streams" version="1.1.59" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Math" version="1.5.43" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Runtime" version="1.0.27" targetFramework="netnano1.0" />
diff --git a/devices/CharacterLcd/samples/packages.lock.json b/devices/CharacterLcd/samples/packages.lock.json
index 37ca1755a7..f00f36dfa3 100644
--- a/devices/CharacterLcd/samples/packages.lock.json
+++ b/devices/CharacterLcd/samples/packages.lock.json
@@ -82,9 +82,9 @@
       },
       "nanoFramework.System.IO.FileSystem": {
         "type": "Direct",
-        "requested": "[1.1.54, 1.1.54]",
-        "resolved": "1.1.54",
-        "contentHash": "K1QPNbrksqw4yjQ/GXgz1Q0hZBi3zi1A8/FUAhYsq8bESVNUFjNpvxHPSDw1gV8DzEg5jH5e9Z2VrAncTQogFQ=="
+        "requested": "[1.1.66, 1.1.66]",
+        "resolved": "1.1.66",
+        "contentHash": "bQIWR23R3UHTO7+icxqIvb07qHs1uI7kj+kjYNf+NTfUHunerfZ4v79+pcSudCR1p5bJHD8GVeV2Hyxl4SZAFw=="
       },
       "nanoFramework.System.IO.Streams": {
         "type": "Direct",