diff --git a/.github/workflows/draft-pdf.yml b/.github/workflows/draft-pdf.yml
index 36b3423..b02906a 100644
--- a/.github/workflows/draft-pdf.yml
+++ b/.github/workflows/draft-pdf.yml
@@ -1,6 +1,6 @@
 name: "paper"
 
-on: 
+on:
     push:
         branches:
           - main
@@ -23,10 +23,10 @@ jobs:
           # This should be the path to the paper within your repo.
           paper-path: paper/paper.md
       - name: Upload
-        uses: actions/upload-artifact@v1
+        uses: actions/upload-artifact@v4
         with:
           name: paper
           # This is the output path where Pandoc will write the compiled
           # PDF. Note, this should be the same directory as the input
           # paper.md
-          path: paper/paper.pdf
\ No newline at end of file
+          path: paper/paper.pdf
diff --git a/R/gcam_agprodchange.R b/R/gcam_agprodchange.R
index 8298600..4262164 100644
--- a/R/gcam_agprodchange.R
+++ b/R/gcam_agprodchange.R
@@ -362,7 +362,7 @@ get_weighted_yield_impact <- function(data = NULL,
 
   # calculate yield shocks for each GCAM commodity based on the weighted crop areas within the Region-basin intersection
   yield_impact_clean <- yield_impact_clean %>%
-    dplyr::left_join(gcam_commod, by = 'crop') %>%
+    dplyr::left_join(gcam_commod, by = 'crop', relationship = 'many-to-many') %>%
     dplyr::left_join(cropland_glu_region %>%
                        tidyr::separate(crop, into = c('irrtype', 'crop_id'), sep = '_') %>%
                        dplyr::left_join(crop_mirca, by = c('crop_id')) %>%
diff --git a/R/pkg_utils.R b/R/pkg_utils.R
index e04dede..3e3e477 100644
--- a/R/pkg_utils.R
+++ b/R/pkg_utils.R
@@ -245,7 +245,8 @@ agprodchange_ref <- function(gcam_version = 'gcam7',
                              gcamdata_dir = NULL)
 {
 
-  year <- AgProdChange <- AgProdChange_ni <- NULL
+  year <- AgProdChange <- AgProdChange_ni <- region <- AgSupplySector <-
+    AgSupplySubsector <- AgProductionTechnology <- high <- low <- ssp4 <- ref <- NULL
 
   if(!is.null(gcamdata_dir)){