diff --git a/CircuitSim.jar b/CircuitSim.jar
index 26dc7de..3505daa 100644
Binary files a/CircuitSim.jar and b/CircuitSim.jar differ
diff --git a/src/main/java/io/zucchini/circuitsimtester/launcher/TesterLauncher.java b/src/main/java/io/zucchini/circuitsimtester/launcher/TesterLauncher.java
index f9ce68f..e36cbcd 100644
--- a/src/main/java/io/zucchini/circuitsimtester/launcher/TesterLauncher.java
+++ b/src/main/java/io/zucchini/circuitsimtester/launcher/TesterLauncher.java
@@ -112,6 +112,12 @@ public void printStudentSummary(boolean verbose) {
                     out.printf("%n[FAIL] Test suite: %s: %s%n",
                                classResult.getId().getDisplayName(),
                                classResult.getResult().getThrowable().get().getMessage());
+
+                    if (verbose) {
+                        err.printf("[verbose] stack trace for failure:\n");
+                        classResult.getResult().getThrowable().get().printStackTrace(err);
+                    }
+
                     continue;
                 }