diff --git a/src/tpm.h b/src/tpm.h
index 23b1849..db44454 100644
--- a/src/tpm.h
+++ b/src/tpm.h
@@ -8,7 +8,7 @@
 
 #define TOLLING_INFOS_MAX_LENGTH 16
 #define TOLLING_PAYMENT_MIN_PERIOD_MS 60000
-#define TOLLING_MAX_CONNS 24
+#define TOLLING_MAX_CONNS 64
 #define TOLLING_CONN_TIMEOUT_MS 10000
 
 typedef enum TOLLING_PROTOCOL {