diff --git a/src/config.h b/src/config.h
index cdca231..5d4b639 100644
--- a/src/config.h
+++ b/src/config.h
@@ -28,7 +28,7 @@
 #define LEASE_RETRY 60 /* on error, retry writing leasefile after LEASE_RETRY seconds */
 #define CACHESIZ 150 /* default cache size */
 #define TTL_FLOOR_LIMIT 3600 /* don't allow --min-cache-ttl to raise TTL above this under any circumstances */
-#define MAXLEASES 1000 /* maximum number of DHCP leases */
+#define MAXLEASES 10000 /* maximum number of DHCP leases */
 #define PING_WAIT 3 /* wait for ping address-in-use test */
 #define PING_CACHE_TIME 30 /* Ping test assumed to be valid this long. */
 #define DECLINE_BACKOFF 600 /* disable DECLINEd static addresses for this long */