diff --git a/pipcompilemulti/environment.py b/pipcompilemulti/environment.py
index acbe010..1496b5d 100644
--- a/pipcompilemulti/environment.py
+++ b/pipcompilemulti/environment.py
@@ -63,10 +63,12 @@ def create_lockfile(self):
             if sink_out_path and sink_out_path != self.outfile:
                 original_in_file = self._read_infile()
                 self._inject_sink()
+
+            verbose = True
             process = subprocess.Popen(
                 self.pin_command,
-                stdout=subprocess.PIPE,
-                stderr=subprocess.PIPE,
+                stdout=None if verbose else subprocess.PIPE,
+                stderr=None if verbose else subprocess.PIPE,
             )
             stdout, stderr = process.communicate()
         finally: