diff --git a/src/main/java/org/scijava/launcher/Archives.java b/src/main/java/org/scijava/launcher/Archives.java
index 6726b83..a7826d3 100644
--- a/src/main/java/org/scijava/launcher/Archives.java
+++ b/src/main/java/org/scijava/launcher/Archives.java
@@ -90,6 +90,9 @@ public static Future<Void> unzip(File file, File destDir, Consumer<String> outpu
 					}
 				}
 			}
+			finally {
+				executor.shutdown();
+			}
 			return null;
 		});
 	}