diff --git a/.circleci/config.yml b/.circleci/config.yml
index 107e8f1..af0cc20 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -6,7 +6,7 @@ orbs:
 jobs:
   build:
     docker:
-      - image: mcr.microsoft.com/dotnet/core/sdk:3.1
+      - image: mcr.microsoft.com/dotnet/sdk:5.0
     environment:
       DOTNET_ROLL_FORWARD_ON_NO_CANDIDATE_FX: 0
     steps: