diff --git a/Dockerfile b/Dockerfile
index bd95804..80da794 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM mcr.microsoft.com/dotnet/sdk:7.0
+FROM mcr.microsoft.com/dotnet/sdk:7.0@sha256:e049e6a153619337ceb4edd040fb60a220d420414d41d6eb39708d6ce390bc7c
 WORKDIR /scip-dotnet
 ADD . /scip-dotnet
 RUN dotnet pack