diff --git a/README.md b/README.md
index 7ac6cd04d..0200916c8 100644
--- a/README.md
+++ b/README.md
@@ -16,8 +16,8 @@ Developer note: The software implements the [Torznab](https://github.com/Sonarr/
 
 
 #### Supported Systems
-* Windows using .NET 4.5.2 [Download here](https://www.microsoft.com/net/framework/versions/net452).
-* Linux and macOS using Mono 4.6.0 and above. [Download here](http://www.mono-project.com/download/). Earlier versions of mono may work but some trackers may fail to negotiate SSL correctly, and others may cause Jackett to crash when used.
+* Windows using .NET 4.6.1 or above [Download here](https://www.microsoft.com/net/framework/versions/net461).
+* Linux and macOS using Mono 5.4.0 and above. [Download here](http://www.mono-project.com/download/). Earlier versions of mono may work, but some trackers may fail to negotiate SSL correctly, and others may cause Jackett to crash when used.
 
 ### Supported Public Trackers
  * 1337x
diff --git a/src/Jackett/Services/ServerService.cs b/src/Jackett/Services/ServerService.cs
index 21a14fa05..e16de8415 100644
--- a/src/Jackett/Services/ServerService.cs
+++ b/src/Jackett/Services/ServerService.cs
@@ -153,6 +153,13 @@ namespace Jackett.Services
                         logger.Error(notice);
                     }
 
+                    if (monoVersionO.Major < 5 || (monoVersionO.Major == 5 && monoVersionO.Minor < 4))
+                    {
+                        string notice = "Mono version 5.4 is the minimum required. Please update to the latest version from http://www.mono-project.com/download/";
+                        _notices.Add(notice);
+                        logger.Error(notice);
+                    }
+
                     try
                     {
                         // Check for mono-devel