diff --git a/datasets/add_months.sh b/datasets/add_months.sh
index 0065d24..540940e 100755
--- a/datasets/add_months.sh
+++ b/datasets/add_months.sh
@@ -44,6 +44,7 @@ fi
 
 COMMENTS_DUMPDIR="${COMMENTS_DUMPDIR:-/gscratch/comdata/raw_data/reddit_dumps/comments}"
 SUBMISSIONS_DUMPDIR="${SUBMISSIONS_DUMPDIR:-/gscratch/comdata/raw_data/reddit_dumps/submissions}"
+PYTHON="${PYTHON:-python3}"
 
 # Part 1 temp dirs (per-month parquets, parsed from .zst)
 TEMP_COMMENTS="/gscratch/comdata/output/temp/add_months_comments.parquet"
@@ -63,10 +64,10 @@ LIVE_SUBMISSIONS_AUTH="/gscratch/comdata/output/reddit_submissions_by_author.par
 
 # --- Part 1: parse new months in parallel -----------------------------------
 
-printf "python3 comments_part1.py parse_dump RC_%s.zst --dumpdir=\"$COMMENTS_DUMPDIR\" --outdir=\"$TEMP_COMMENTS\"\n" "$@" \
+printf "$PYTHON comments_part1.py parse_dump RC_%s.zst --dumpdir=\"$COMMENTS_DUMPDIR\" --outdir=\"$TEMP_COMMENTS\"\n" "$@" \
     > add_months_comments_tasks.txt
 
-printf "python3 submissions_part1.py parse_dump RS_%s.zst --dumpdir=\"$SUBMISSIONS_DUMPDIR\" --outdir=\"$TEMP_SUBMISSIONS\"\n" "$@" \
+printf "$PYTHON submissions_part1.py parse_dump RS_%s.zst --dumpdir=\"$SUBMISSIONS_DUMPDIR\" --outdir=\"$TEMP_SUBMISSIONS\"\n" "$@" \
     > add_months_submissions_tasks.txt
 
 parallel --joblog add_months_comments_joblog.txt --results add_months_comments_logs \
diff --git a/datasets/add_months_multinode.sh b/datasets/add_months_multinode.sh
index e16b373..6dca436 100755
--- a/datasets/add_months_multinode.sh
+++ b/datasets/add_months_multinode.sh
@@ -34,6 +34,7 @@ MONTHS=("$@")
 
 COMMENTS_DUMPDIR="${COMMENTS_DUMPDIR:-/gscratch/comdata/raw_data/reddit_dumps/comments}"
 SUBMISSIONS_DUMPDIR="${SUBMISSIONS_DUMPDIR:-/gscratch/comdata/raw_data/reddit_dumps/submissions}"
+PYTHON="${PYTHON:-python3}"
 
 TEMP_COMMENTS="/gscratch/comdata/output/temp/add_months_comments.parquet"
 TEMP_SUBMISSIONS="/gscratch/comdata/output/temp/add_months_submissions.parquet"
@@ -48,10 +49,10 @@ LIVE_SUBMISSIONS_AUTH="/gscratch/comdata/output/reddit_submissions_by_author.par
 
 # --- Part 1: parse new months in parallel -----------------------------------
 
-printf "python3 comments_part1.py parse_dump RC_%s.zst --dumpdir=\"$COMMENTS_DUMPDIR\" --outdir=\"$TEMP_COMMENTS\"\n" "${MONTHS[@]}" \
+printf "$PYTHON comments_part1.py parse_dump RC_%s.zst --dumpdir=\"$COMMENTS_DUMPDIR\" --outdir=\"$TEMP_COMMENTS\"\n" "${MONTHS[@]}" \
     > add_months_comments_tasks.txt
 
-printf "python3 submissions_part1.py parse_dump RS_%s.zst --dumpdir=\"$SUBMISSIONS_DUMPDIR\" --outdir=\"$TEMP_SUBMISSIONS\"\n" "${MONTHS[@]}" \
+printf "$PYTHON submissions_part1.py parse_dump RS_%s.zst --dumpdir=\"$SUBMISSIONS_DUMPDIR\" --outdir=\"$TEMP_SUBMISSIONS\"\n" "${MONTHS[@]}" \
     > add_months_submissions_tasks.txt
 
 parallel --joblog add_months_comments_joblog.txt --results add_months_comments_logs \