diff --git a/src/dwarfs/worker_group.cpp b/src/dwarfs/worker_group.cpp
index 382d5b66..fd6f7c56 100644
--- a/src/dwarfs/worker_group.cpp
+++ b/src/dwarfs/worker_group.cpp
@@ -19,8 +19,6 @@
  * along with dwarfs.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-#include <iostream> // TODO: remove
-
 #include <atomic>
 #include <condition_variable>
 #include <mutex>