diff --git a/src/NzbDrone.Api/NzbDrone.Api.csproj b/src/NzbDrone.Api/NzbDrone.Api.csproj
index 3f0679779..62f2c41ff 100644
--- a/src/NzbDrone.Api/NzbDrone.Api.csproj
+++ b/src/NzbDrone.Api/NzbDrone.Api.csproj
@@ -40,9 +40,9 @@
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="FluentValidation, Version=5.4.0.0, Culture=neutral, processorArchitecture=MSIL">
+    <Reference Include="FluentValidation, Version=5.5.0.0, Culture=neutral, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\FluentValidation.5.4.0.0\lib\Net40\FluentValidation.dll</HintPath>
+      <HintPath>..\packages\FluentValidation.5.5.0.0\lib\Net40\FluentValidation.dll</HintPath>
     </Reference>
     <Reference Include="Nancy, Version=0.23.2.0, Culture=neutral, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
diff --git a/src/NzbDrone.Api/packages.config b/src/NzbDrone.Api/packages.config
index fadbbdb17..10f28ba95 100644
--- a/src/NzbDrone.Api/packages.config
+++ b/src/NzbDrone.Api/packages.config
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="DDay.iCal" version="1.0.2.575" targetFramework="net40" />
-  <package id="FluentValidation" version="5.4.0.0" targetFramework="net40" />
+  <package id="FluentValidation" version="5.5.0.0" targetFramework="net40" />
   <package id="Nancy" version="0.23.2" targetFramework="net40" />
   <package id="Nancy.Authentication.Basic" version="0.23.2" targetFramework="net40" />
   <package id="Newtonsoft.Json" version="6.0.6" targetFramework="net40" />
diff --git a/src/NzbDrone.Core.Test/NzbDrone.Core.Test.csproj b/src/NzbDrone.Core.Test/NzbDrone.Core.Test.csproj
index cd78177e5..98b20705d 100644
--- a/src/NzbDrone.Core.Test/NzbDrone.Core.Test.csproj
+++ b/src/NzbDrone.Core.Test/NzbDrone.Core.Test.csproj
@@ -60,9 +60,9 @@
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\packages\FluentMigrator.Runner.1.3.1.0\lib\40\FluentMigrator.Runner.dll</HintPath>
     </Reference>
-    <Reference Include="FluentValidation, Version=5.0.0.1, Culture=neutral, processorArchitecture=MSIL">
+    <Reference Include="FluentValidation, Version=5.5.0.0, Culture=neutral, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\FluentValidation.5.4.0.0\lib\Net40\FluentValidation.dll</HintPath>
+      <HintPath>..\packages\FluentValidation.5.5.0.0\lib\Net40\FluentValidation.dll</HintPath>
     </Reference>
     <Reference Include="Newtonsoft.Json, Version=6.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
diff --git a/src/NzbDrone.Core.Test/packages.config b/src/NzbDrone.Core.Test/packages.config
index 033116e58..e705ff842 100644
--- a/src/NzbDrone.Core.Test/packages.config
+++ b/src/NzbDrone.Core.Test/packages.config
@@ -5,7 +5,7 @@
   <package id="FluentAssertions" version="3.2.1" targetFramework="net40" />
   <package id="FluentMigrator" version="1.3.1.0" targetFramework="net40" />
   <package id="FluentMigrator.Runner" version="1.3.1.0" targetFramework="net40" />
-  <package id="FluentValidation" version="5.4.0.0" targetFramework="net40" />
+  <package id="FluentValidation" version="5.5.0.0" targetFramework="net40" />
   <package id="Moq" version="4.0.10827" />
   <package id="NBuilder" version="3.0.1.1" />
   <package id="NCrunch.Framework" version="1.46.0.9" targetFramework="net40" />
diff --git a/src/NzbDrone.Core/NzbDrone.Core.csproj b/src/NzbDrone.Core/NzbDrone.Core.csproj
index 0c2a1e7e3..de89eaa44 100644
--- a/src/NzbDrone.Core/NzbDrone.Core.csproj
+++ b/src/NzbDrone.Core/NzbDrone.Core.csproj
@@ -60,9 +60,9 @@
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\packages\FluentMigrator.Runner.1.3.1.0\lib\40\FluentMigrator.Runner.dll</HintPath>
     </Reference>
-    <Reference Include="FluentValidation, Version=5.4.0.0, Culture=neutral, processorArchitecture=MSIL">
+    <Reference Include="FluentValidation, Version=5.5.0.0, Culture=neutral, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\FluentValidation.5.4.0.0\lib\Net40\FluentValidation.dll</HintPath>
+      <HintPath>..\packages\FluentValidation.5.5.0.0\lib\Net40\FluentValidation.dll</HintPath>
     </Reference>
     <Reference Include="Growl.Connector, Version=2.0.0.0, Culture=neutral, PublicKeyToken=980c2339411be384, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
diff --git a/src/NzbDrone.Core/packages.config b/src/NzbDrone.Core/packages.config
index 77792749a..2c2ad304f 100644
--- a/src/NzbDrone.Core/packages.config
+++ b/src/NzbDrone.Core/packages.config
@@ -2,7 +2,7 @@
 <packages>
   <package id="FluentMigrator" version="1.3.1.0" targetFramework="net40" />
   <package id="FluentMigrator.Runner" version="1.3.1.0" targetFramework="net40" />
-  <package id="FluentValidation" version="5.4.0.0" targetFramework="net40" />
+  <package id="FluentValidation" version="5.5.0.0" targetFramework="net40" />
   <package id="MediaInfoNet" version="0.3" targetFramework="net40" />
   <package id="Newtonsoft.Json" version="6.0.6" targetFramework="net40" />
   <package id="NLog" version="2.1.0" targetFramework="net40" />
diff --git a/src/NzbDrone.Integration.Test/NzbDrone.Integration.Test.csproj b/src/NzbDrone.Integration.Test/NzbDrone.Integration.Test.csproj
index 0c3bd9b26..43a8c2113 100644
--- a/src/NzbDrone.Integration.Test/NzbDrone.Integration.Test.csproj
+++ b/src/NzbDrone.Integration.Test/NzbDrone.Integration.Test.csproj
@@ -46,9 +46,9 @@
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\packages\FluentAssertions.3.2.1\lib\net40\FluentAssertions.Core.dll</HintPath>
     </Reference>
-    <Reference Include="FluentValidation, Version=5.4.0.0, Culture=neutral, processorArchitecture=MSIL">
+    <Reference Include="FluentValidation, Version=5.5.0.0, Culture=neutral, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\FluentValidation.5.4.0.0\lib\Net40\FluentValidation.dll</HintPath>
+      <HintPath>..\packages\FluentValidation.5.5.0.0\lib\Net40\FluentValidation.dll</HintPath>
     </Reference>
     <Reference Include="Microsoft.AspNet.SignalR.Client">
       <HintPath>..\packages\Microsoft.AspNet.SignalR.Client.1.2.1\lib\net40\Microsoft.AspNet.SignalR.Client.dll</HintPath>
diff --git a/src/NzbDrone.Integration.Test/packages.config b/src/NzbDrone.Integration.Test/packages.config
index 94ea4dc94..db4226eff 100644
--- a/src/NzbDrone.Integration.Test/packages.config
+++ b/src/NzbDrone.Integration.Test/packages.config
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="FluentAssertions" version="3.2.1" targetFramework="net40" />
-  <package id="FluentValidation" version="5.4.0.0" targetFramework="net40" />
+  <package id="FluentValidation" version="5.5.0.0" targetFramework="net40" />
   <package id="Microsoft.AspNet.SignalR.Client" version="1.2.1" targetFramework="net40" />
   <package id="Microsoft.Owin" version="2.1.0" targetFramework="net40" />
   <package id="Microsoft.Owin.Host.HttpListener" version="2.1.0" targetFramework="net40" />