diff --git a/DEM.Net.Core/DEM.Net.Core.csproj b/DEM.Net.Core/DEM.Net.Core.csproj
index e084fbb3..42f2c810 100644
--- a/DEM.Net.Core/DEM.Net.Core.csproj
+++ b/DEM.Net.Core/DEM.Net.Core.csproj
@@ -58,7 +58,7 @@ GPX track can be drawn on 3D model's texture</PackageReleaseNotes>
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="BitMiracle.LibTiff.NET" Version="2.4.626" />
+    <PackageReference Include="BitMiracle.LibTiff.NET" Version="2.4.633" />
     <PackageReference Include="DotSpatial.Projections" Version="1.9.0" />
     <PackageReference Include="GeoAPI.CoordinateSystems" Version="1.7.5" />
     <PackageReference Include="GeoAPI.Core" Version="1.7.5" />
diff --git a/DEM.Net.TestWinForm/DEM.Net.TestWinForm.csproj b/DEM.Net.TestWinForm/DEM.Net.TestWinForm.csproj
index 7bc1fd3d..9c0afd1c 100644
--- a/DEM.Net.TestWinForm/DEM.Net.TestWinForm.csproj
+++ b/DEM.Net.TestWinForm/DEM.Net.TestWinForm.csproj
@@ -36,8 +36,8 @@
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="BitMiracle.LibTiff.NET, Version=2.4.626.0, Culture=neutral, PublicKeyToken=53879b3e20e7a7d6, processorArchitecture=MSIL">
-      <HintPath>..\packages\BitMiracle.LibTiff.NET.2.4.626\lib\net40\BitMiracle.LibTiff.NET.dll</HintPath>
+    <Reference Include="BitMiracle.LibTiff.NET, Version=2.4.633.0, Culture=neutral, PublicKeyToken=53879b3e20e7a7d6, processorArchitecture=MSIL">
+      <HintPath>..\packages\BitMiracle.LibTiff.NET.2.4.633\lib\net40\BitMiracle.LibTiff.NET.dll</HintPath>
     </Reference>
     <Reference Include="DotSpatial.Projections, Version=1.9.0.0, Culture=neutral, PublicKeyToken=272632bddd08a38b, processorArchitecture=MSIL">
       <HintPath>..\packages\DotSpatial.Projections.1.9\lib\net40-Client\DotSpatial.Projections.dll</HintPath>
diff --git a/DEM.Net.TestWinForm/packages.config b/DEM.Net.TestWinForm/packages.config
index be8c1586..8b863336 100644
--- a/DEM.Net.TestWinForm/packages.config
+++ b/DEM.Net.TestWinForm/packages.config
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="BitMiracle.LibTiff.NET" version="2.4.626" targetFramework="net461" />
+  <package id="BitMiracle.LibTiff.NET" version="2.4.633" targetFramework="net461" />
   <package id="DotSpatial.Projections" version="1.9" targetFramework="net461" />
   <package id="GeoAPI.CoordinateSystems" version="1.7.5" targetFramework="net452" />
   <package id="GeoAPI.Core" version="1.7.5" targetFramework="net452" />
diff --git a/DEM.Net.xUnit.Test/DEM.Net.xUnit.Test.csproj b/DEM.Net.xUnit.Test/DEM.Net.xUnit.Test.csproj
index 5197ac35..b2501ed4 100644
--- a/DEM.Net.xUnit.Test/DEM.Net.xUnit.Test.csproj
+++ b/DEM.Net.xUnit.Test/DEM.Net.xUnit.Test.csproj
@@ -27,7 +27,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="BitMiracle.LibTiff.NET" Version="2.4.626" />
+    <PackageReference Include="BitMiracle.LibTiff.NET" Version="2.4.633" />
     <PackageReference Include="DotSpatial.Projections" Version="1.9.0" />
     <PackageReference Include="GeoAPI.CoordinateSystems" Version="1.7.5" />
     <PackageReference Include="GeoAPI.Core" Version="1.7.5" />