diff --git a/pdfplumber/container.py b/pdfplumber/container.py
index 2d664fe..4793655 100644
--- a/pdfplumber/container.py
+++ b/pdfplumber/container.py
@@ -170,7 +170,9 @@ class Container(object):
 
         cols = CSV_COLS_REQUIRED + list(filter(serializer.attr_filter, non_req_cols))
 
-        w = csv.DictWriter(stream, fieldnames=cols, extrasaction="ignore")
+        w = csv.DictWriter(
+            stream, fieldnames=cols, extrasaction="ignore", quoting=csv.QUOTE_MINIMAL
+        )
         w.writeheader()
         w.writerows(serialized)