diff --git a/middleware.go b/middleware.go
index e90d95c..8c6d5ca 100644
--- a/middleware.go
+++ b/middleware.go
@@ -252,10 +252,10 @@ func Session(cfg Options) func(next http.Handler) http.Handler {
 					sessionType = max(sessionType, proto.SessionType_AccessKey)
 
 					ctx = WithAccessKey(ctx, accessKey)
-					// TODO:
-					// projectID, _ = proto.GetProjectID(accessKey)
-					// ctx = withProjectIDy(ctx, projectID)
-					// httplog.SetAttrs(ctx, slog.Uint64("projectId", projectID))
+
+					projectID, _ = GetProjectIDFromAccessKey(accessKey)
+					ctx = withProjectID(ctx, projectID)
+					httplog.SetAttrs(ctx, slog.Uint64("projectId", projectID))
 					break
 				}
 			}
diff --git a/proto/proto.go b/proto/proto.go
index 40371af..50df7ed 100644
--- a/proto/proto.go
+++ b/proto/proto.go
@@ -12,7 +12,3 @@ func (s SessionType) OrHigher() []SessionType {
 	}
 	return list
 }
-
-// Deprecated: Use SessionType_S2S instead.
-// Note: Remove this after some time.
-const SessionType_InternalService = SessionType_S2S