diff --git a/lib/util/exec/containerbase.ts b/lib/util/exec/containerbase.ts
index 178f6b2944870294714e537dbeab2661d6b87987..3d7571f160da1651527ab0f36330fcad2912643e 100644
--- a/lib/util/exec/containerbase.ts
+++ b/lib/util/exec/containerbase.ts
@@ -36,7 +36,7 @@ const allToolConfig: Record<string, ToolConfig> = {
     versioning: npmVersioningId,
   },
   dotnet: {
-    datasource: 'dotnet',
+    datasource: 'dotnet-version',
     depName: 'dotnet-sdk',
     versioning: semverVersioningId,
   },