diff --git a/Tests/packages.config b/Tests/packages.config
index 59106bf1..7bcc11b7 100644
--- a/Tests/packages.config
+++ b/Tests/packages.config
@@ -55,7 +55,7 @@
   <package id="System.Text.Encoding" version="4.3.0" targetFramework="net461" />
   <package id="System.Text.Encoding.CodePages" version="4.3.0" targetFramework="net461" />
   <package id="System.Text.Encoding.Extensions" version="4.3.0" targetFramework="net461" />
-  <package id="System.Text.RegularExpressions" version="4.3.0" targetFramework="net461" />
+  <package id="System.Text.RegularExpressions" version="4.3.1" targetFramework="net461" />
   <package id="System.Threading" version="4.3.0" targetFramework="net461" />
   <package id="System.Threading.Tasks" version="4.3.0" targetFramework="net461" />
   <package id="System.Threading.Tasks.Parallel" version="4.3.0" targetFramework="net461" />