diff --git a/src/Orchard.Web/Orchard.Web.csproj b/src/Orchard.Web/Orchard.Web.csproj
index 7b8b8b28e5..e495d1f9c5 100644
--- a/src/Orchard.Web/Orchard.Web.csproj
+++ b/src/Orchard.Web/Orchard.Web.csproj
@@ -85,8 +85,8 @@
     <Reference Include="Newtonsoft.Json, Version=13.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
       <HintPath>..\packages\Newtonsoft.Json.13.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
     </Reference>
-    <Reference Include="Npgsql, Version=4.0.14.0, Culture=neutral, PublicKeyToken=5d8b90d52f46fda7, processorArchitecture=MSIL">
-      <HintPath>..\packages\Npgsql.4.0.14\lib\net451\Npgsql.dll</HintPath>
+    <Reference Include="Npgsql, Version=4.0.16.0, Culture=neutral, PublicKeyToken=5d8b90d52f46fda7, processorArchitecture=MSIL">
+      <HintPath>..\packages\Npgsql.4.0.16\lib\net451\Npgsql.dll</HintPath>
     </Reference>
     <Reference Include="NuGet.Core, Version=1.1.0.0, Culture=neutral, processorArchitecture=MSIL">
       <HintPath>..\packages\Orchard.NuGet.Core.1.1.0.0\lib\NuGet.Core.dll</HintPath>
diff --git a/src/Orchard.Web/packages.config b/src/Orchard.Web/packages.config
index fac22bb3f4..229f69c805 100644
--- a/src/Orchard.Web/packages.config
+++ b/src/Orchard.Web/packages.config
@@ -14,7 +14,7 @@
   <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net48" />
   <package id="MySql.Data" version="6.7.9" targetFramework="net48" />
   <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net48" />
-  <package id="Npgsql" version="4.0.14" targetFramework="net48" />
+  <package id="Npgsql" version="4.0.16" targetFramework="net48" />
   <package id="Orchard.NuGet.Core" version="1.1.0.0" targetFramework="net48" />
   <package id="Owin" version="1.0" targetFramework="net48" />
   <package id="System.Buffers" version="4.4.0" targetFramework="net48" />