diff --git a/WpfDiff/WpfDiff/WpfDiff.csproj b/WpfDiff/WpfDiff/WpfDiff.csproj
index 2db727b..e3ebb4f 100644
--- a/WpfDiff/WpfDiff/WpfDiff.csproj
+++ b/WpfDiff/WpfDiff/WpfDiff.csproj
@@ -208,7 +208,7 @@
       <Version>4.3.0</Version>
     </PackageReference>
     <PackageReference Include="System.Text.RegularExpressions">
-      <Version>4.3.0</Version>
+      <Version>4.3.1</Version>
     </PackageReference>
     <PackageReference Include="System.Threading">
       <Version>4.3.0</Version>