diff --git a/bowler/tests/lib.py b/bowler/tests/lib.py
index 9a99889..e0cd533 100644
--- a/bowler/tests/lib.py
+++ b/bowler/tests/lib.py
@@ -12,7 +12,7 @@
 from io import StringIO
 
 import click
-import volatile
+import tempfile
 from fissix import pygram, pytree
 from fissix.pgen2.driver import Driver
 
@@ -96,7 +96,7 @@ def default_query_func(files):
         if query_func is None:
             query_func = default_query_func
 
-        with volatile.file(mode="w", suffix=".py") as f:
+        with tempfile.NamedTemporaryFile(mode="w", suffix=".py", delete=False) as f:
             # TODO: I'm almost certain this will not work on Windows, since
             # NamedTemporaryFile has it already open for writing.  Consider
             # using mktemp directly?
diff --git a/requirements.txt b/requirements.txt
index 0339b03..b11a1f2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,4 +2,3 @@ attrs
 click
 fissix
 moreorless>=0.2.0
-volatile