diff --git a/seedtable/YamlData.cs b/seedtable/YamlData.cs
index f1612d5..f99dcf9 100644
--- a/seedtable/YamlData.cs
+++ b/seedtable/YamlData.cs
@@ -202,7 +202,7 @@ private static object ConvertDataTableWithYamlColumns(IEnumerable<Dictionary<str
             );
         }
 
-        private static object ConvertValueWithYamlColumns(Deserializer deserializer, Dictionary<string, object> value, IEnumerable<string> yamlColumnNames) {
+        private static object ConvertValueWithYamlColumns(IDeserializer deserializer, Dictionary<string, object> value, IEnumerable<string> yamlColumnNames) {
             return value.ToDictionary(
                 pair => pair.Key,
                 pair => {
diff --git a/seedtable/packages.config b/seedtable/packages.config
index 2e5a29e..5ba1524 100644
--- a/seedtable/packages.config
+++ b/seedtable/packages.config
@@ -4,5 +4,5 @@
   <package id="CommandLineParser" version="2.2.1" targetFramework="net461" />
   <package id="DocumentFormat.OpenXml" version="2.8.1" targetFramework="net452" />
   <package id="EPPlus" version="4.5.1" targetFramework="net452" />
-  <package id="YamlDotNet" version="4.3.1" targetFramework="net461" />
+  <package id="YamlDotNet" version="5.2.1" targetFramework="net452" />
 </packages>
\ No newline at end of file
diff --git a/seedtable/seedtable.csproj b/seedtable/seedtable.csproj
index cc7cbc6..dddd33b 100644
--- a/seedtable/seedtable.csproj
+++ b/seedtable/seedtable.csproj
@@ -102,8 +102,8 @@
     <Reference Include="System.Drawing" />
     <Reference Include="System.Runtime.Serialization" />
     <Reference Include="System.Security" />
-    <Reference Include="YamlDotNet, Version=4.3.1.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>..\packages\YamlDotNet.4.3.1\lib\net45\YamlDotNet.dll</HintPath>
+    <Reference Include="YamlDotNet, Version=5.0.0.0, Culture=neutral, processorArchitecture=MSIL">
+      <HintPath>..\packages\YamlDotNet.5.2.1\lib\net45\YamlDotNet.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>