diff --git a/data/ip2region.xdb b/data/ip2region_v4.xdb
similarity index 100%
rename from data/ip2region.xdb
rename to data/ip2region_v4.xdb
diff --git a/data/ip.merge.txt b/data/ipv4_source.txt
similarity index 100%
rename from data/ip.merge.txt
rename to data/ipv4_source.txt