diff --git a/data.nitrates.Rproj b/data.nitrates.Rproj
index 6a3ede2239ad87da09a17c21b42cb9bb5ea83810..0e98b543831e1b8509f246d4489059f5bc5c25c1 100644
--- a/data.nitrates.Rproj
+++ b/data.nitrates.Rproj
@@ -1,4 +1,5 @@
 Version: 1.0
+ProjectId: c4e52bd2-ca70-46a6-9ee2-8a95d0580352
 
 RestoreWorkspace: No
 SaveWorkspace: No