diff --git a/modules b/modules
index ff19983c4..afbcf1f16 160000
--- a/modules
+++ b/modules
@@ -1 +1 @@
-Subproject commit ff19983c4ac5879e25d9230e97d658dc88fc3f06
+Subproject commit afbcf1f16a8b524a24a68561f06eba59ec0cd7f3
diff --git a/test/e2e/terraria_bot_e2e_test.go b/test/e2e/terraria_bot_e2e_test.go
index 0a6fdb9ae..874360e6f 100644
--- a/test/e2e/terraria_bot_e2e_test.go
+++ b/test/e2e/terraria_bot_e2e_test.go
@@ -73,9 +73,14 @@ func TestGameServer_TerrariaBot_Joined(t *testing.T) {
 		ExpectDepth:   expectedDepth,
 		RCON:          map[string]any{"protocol": "none"},
 		ConsoleMode:   "pty",
+		// The module's exec readiness probe: it reads /proc/net/tcp instead of
+		// connecting, because a tcpSocket probe's connect-and-close crashes the
+		// Terraria server (ObjectDisposedException in Netplay.ServerLoop).
 		Probes: map[string]any{
 			"readiness": map[string]any{
-				"tcpSocket":           map[string]any{"port": "game"},
+				"exec": map[string]any{
+					"command": []any{"sh", "-c", "grep -qsE ':1E61 [0-9A-F]+:[0-9A-F]{4} 0A' /proc/net/tcp /proc/net/tcp6"},
+				},
 				"initialDelaySeconds": int64(30),
 				"periodSeconds":       int64(10),
 				"failureThreshold":    int64(30),