diff --git a/src/schema.rs b/src/schema.rs
index d9bb067..443d616 100644
--- a/src/schema.rs
+++ b/src/schema.rs
@@ -16,7 +16,7 @@ pub const STARTUP_SQL: &str = r##"
 PRAGMA main.synchronous=NORMAL;
 PRAGMA foreign_keys = ON;
 PRAGMA journal_size_limit=32768;
-pragma mmap_size = 134217728; -- 128MB of mmap
+pragma mmap_size = 17179869184; -- cap mmap at 16GB
 "##;
 
 /// Latest database version