diff --git a/Cargo.lock b/Cargo.lock
index 9533514..b515fab 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1689,7 +1689,6 @@ dependencies = [
  "serde_json",
  "sqlx",
  "thiserror",
- "tikv-jemallocator",
  "tokio",
  "tokio-tungstenite",
  "tonic",
@@ -2959,26 +2958,6 @@ dependencies = [
  "once_cell",
 ]
 
-[[package]]
-name = "tikv-jemalloc-sys"
-version = "0.5.3+5.3.0-patched"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a678df20055b43e57ef8cddde41cdfda9a3c1a060b67f4c5836dfb1d78543ba8"
-dependencies = [
- "cc",
- "libc",
-]
-
-[[package]]
-name = "tikv-jemallocator"
-version = "0.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "20612db8a13a6c06d57ec83953694185a367e16945f66565e8028d2c0bd76979"
-dependencies = [
- "libc",
- "tikv-jemalloc-sys",
-]
-
 [[package]]
 name = "time"
 version = "0.1.45"
diff --git a/Cargo.toml b/Cargo.toml
index b04ef07..25f4f03 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -54,8 +54,6 @@ bech32 = "0.9.1"
 url = "2.3.1"
 qrcode = { version = "0.12.0", default-features = false, features = ["svg"] }
 nostr = { version = "0.18.0", default-features = false, features = ["base", "nip04", "nip19"] }
-[target.'cfg(not(target_env = "msvc"))'.dependencies]
-tikv-jemallocator = "0.5"
 
 [dev-dependencies]
 anyhow = "1"
diff --git a/src/main.rs b/src/main.rs
index 97aa032..712c902 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -9,13 +9,6 @@ use std::sync::mpsc::{Receiver as MpscReceiver, Sender as MpscSender};
 use std::thread;
 use tracing::info;
 
-#[cfg(not(target_env = "msvc"))]
-use tikv_jemallocator::Jemalloc;
-
-#[cfg(not(target_env = "msvc"))]
-#[global_allocator]
-static GLOBAL: Jemalloc = Jemalloc;
-
 /// Start running a Nostr relay server.
 fn main() {
     let args = CLIArgs::parse();
diff --git a/src/repo/sqlite_migration.rs b/src/repo/sqlite_migration.rs
index 709a572..60544b2 100644
--- a/src/repo/sqlite_migration.rs
+++ b/src/repo/sqlite_migration.rs
@@ -19,7 +19,7 @@ PRAGMA foreign_keys = ON;
 PRAGMA journal_size_limit = 32768;
 PRAGMA temp_store = 2; -- use memory, not temp files
 PRAGMA main.cache_size = 20000; -- 80MB max cache size per conn
-pragma mmap_size = 17179869184; -- cap mmap at 16GB
+pragma mmap_size = 4294967296; -- cap mmap at 4GB
 "##;
 
 /// Latest database version