diff --git a/ngrams/term_frequencies.py b/ngrams/term_frequencies.py
index b83f55d..5a7b166 100755
--- a/ngrams/term_frequencies.py
+++ b/ngrams/term_frequencies.py
@@ -247,6 +247,8 @@ def sort_tf(input_parquet="/gscratch/comdata/output/temp_reddit_comments_by_subr
     from pyspark.sql import functions as f
     from pyspark.sql import SparkSession
     spark = SparkSession.builder.getOrCreate()
+    spark.config('spark.executor.memory','900g')
+
     df = spark.read.parquet(input_parquet)
     df = df.repartition(2000,tf_name)
     df = df.sort([tf_name,'week','subreddit'])