diff --git a/.drone.yml b/.drone.yml
index a499915..a65e05b 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -8,7 +8,7 @@ trigger:
 
 steps:
   - name: build
-    image: mcr.microsoft.com/dotnet/core/sdk:3.1
+    image: mcr.microsoft.com/dotnet/sdk:5.0
     volumes:
       - name: docs
         path: /docs