diff --git a/tvix/proto/castore.proto b/tvix/proto/castore.proto
index ec0266035..aa3c9b37b 100644
--- a/tvix/proto/castore.proto
+++ b/tvix/proto/castore.proto
@@ -3,7 +3,7 @@
 
 syntax = "proto3";
 
-package fossil.store;
+package tvix.proto.v1;
 
 // A Directory can contain Directory, File or Symlink nodes.
 // Each of these nodes have a name attribute, which is the basename in that directory
diff --git a/tvix/proto/evaluator.proto b/tvix/proto/evaluator.proto
index 710a28fb9..96431a0b3 100644
--- a/tvix/proto/evaluator.proto
+++ b/tvix/proto/evaluator.proto
@@ -2,7 +2,7 @@
 // Copyright © 2021 The Tvix Authors
 syntax = "proto3";
 
-package tvix.proto.evaluator.v1;
+package tvix.proto.v1;
 
 service EvaluatorService {
   rpc Evaluate(stream EvaluateRequest) returns (stream EvaluateResponse) {}