diff --git a/Tests/MongoQueueTests.Legacy/packages.config b/Tests/MongoQueueTests.Legacy/packages.config
index 8cd2980..0393b01 100644
--- a/Tests/MongoQueueTests.Legacy/packages.config
+++ b/Tests/MongoQueueTests.Legacy/packages.config
@@ -49,7 +49,7 @@
   <package id="System.Security.Cryptography.X509Certificates" version="4.3.2" targetFramework="net461" />
   <package id="System.Text.Encoding" 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.Timer" version="4.3.0" targetFramework="net461" />