diff --git a/librocksdb-sys/build.rs b/librocksdb-sys/build.rs
index 94526e1..dccaf29 100644
--- a/librocksdb-sys/build.rs
+++ b/librocksdb-sys/build.rs
@@ -150,7 +150,7 @@ fn build_rocksdb() {
         config.define("ROCKSDB_PLATFORM_POSIX", None);
         config.define("ROCKSDB_LIB_IO_POSIX", None);
 
-        env::set_var("IPHONEOS_DEPLOYMENT_TARGET", "11.0");
+        env::set_var("IPHONEOS_DEPLOYMENT_TARGET", "12.0");
     } else if target.contains("darwin") {
         config.define("OS_MACOSX", None);
         config.define("ROCKSDB_PLATFORM_POSIX", None);