diff --git a/Dockerfile b/Dockerfile
index bd95804..0ca0f6d 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:f712881bafadf0e56250ece1da28ba2baedd03fb3dd49a67f209f9d0cf928e81
 WORKDIR /scip-dotnet
 ADD . /scip-dotnet
 RUN dotnet pack