diff --git a/embed/build.sh b/embed/build.sh
index c0736ec..a099c31 100755
--- a/embed/build.sh
+++ b/embed/build.sh
@@ -3,7 +3,6 @@ set -eo pipefail
 
 cd -P -- "$(dirname -- "$0")"
 
-# build SQLite
 zig cc --target=wasm32-wasi -flto -g0 -O2 \
   -o sqlite3.wasm ../sqlite3/main.c \
 	-I../sqlite3/ \
@@ -12,4 +11,8 @@ zig cc --target=wasm32-wasi -flto -g0 -O2 \
 	-mnontrapping-fptoint -msign-ext \
 	-mexec-model=reactor \
 	-D_HAVE_SQLITE_CONFIG_H \
-	$(awk '{print "-Wl,--export="$0}' exports.txt)
\ No newline at end of file
+	$(awk '{print "-Wl,--export="$0}' exports.txt)
+
+trap 'rm -f sqlite3.tmp' EXIT
+wasm-ctor-eval -g -c _initialize sqlite3.wasm -o sqlite3.tmp
+wasm-opt -g -O2 sqlite3.tmp -o sqlite3.wasm
\ No newline at end of file
diff --git a/embed/sqlite3.wasm b/embed/sqlite3.wasm
index 007c8bc..faf8284 100755
Binary files a/embed/sqlite3.wasm and b/embed/sqlite3.wasm differ
diff --git a/go.mod b/go.mod
index e11cf69..da5373d 100644
--- a/go.mod
+++ b/go.mod
@@ -6,7 +6,7 @@ require (
 	github.com/ncruces/julianday v0.1.5
 	github.com/tetratelabs/wazero v1.0.1
 	golang.org/x/sync v0.1.0
-	golang.org/x/sys v0.6.0
+	golang.org/x/sys v0.7.0
 )
 
 retract v0.4.0 // tagged from the wrong branch
diff --git a/go.sum b/go.sum
index bb54896..b20e78c 100644
--- a/go.sum
+++ b/go.sum
@@ -4,5 +4,5 @@ github.com/tetratelabs/wazero v1.0.1 h1:xyWBoGyMjYekG3mEQ/W7xm9E05S89kJ/at696d/9
 github.com/tetratelabs/wazero v1.0.1/go.mod h1:wYx2gNRg8/WihJfSDxA1TIL8H+GkfLYm+bIfbblu9VQ=
 golang.org/x/sync v0.1.0 h1:wsuoTGHzEhffawBOhz5CYhcrV4IdKZbEyZjBMuTp12o=
 golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sys v0.6.0 h1:MVltZSvRTcU2ljQOhs94SXPftV6DCNnZViHeQps87pQ=
-golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.7.0 h1:3jlCCIQZPdOYu1h8BkNvLz8Kgwtae2cagcG/VamtZRU=
+golang.org/x/sys v0.7.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
diff --git a/module.go b/module.go
index 362a407..d3362a2 100644
--- a/module.go
+++ b/module.go
@@ -40,7 +40,7 @@ func instantiateModule() (*module, error) {
 		return nil, sqlite3.err
 	}
 
-	cfg := wazero.NewModuleConfig().WithStartFunctions("_initialize")
+	cfg := wazero.NewModuleConfig()
 
 	mod, err := sqlite3.runtime.InstantiateModule(ctx, sqlite3.compiled, cfg)
 	if err != nil {
diff --git a/sqlite3/main.c b/sqlite3/main.c
index 657cae9..a1fa15d 100644
--- a/sqlite3/main.c
+++ b/sqlite3/main.c
@@ -21,7 +21,7 @@ int sqlite3_os_init() {
   return sqlite3_vfs_register(os_vfs(), /*default=*/true);
 }
 
-__attribute__((constructor)) void premain() {
+__attribute__((constructor)) void init() {
   sqlite3_initialize();
   sqlite3_auto_extension((void (*)(void))sqlite3_base_init);
   sqlite3_auto_extension((void (*)(void))sqlite3_decimal_init);
diff --git a/sqlite3/sqlite_cfg.h b/sqlite3/sqlite_cfg.h
index 32950f6..2434fdd 100644
--- a/sqlite3/sqlite_cfg.h
+++ b/sqlite3/sqlite_cfg.h
@@ -29,7 +29,7 @@
 #define SQLITE_USE_ALLOCA
 
 // Because WASM does not support shared memory,
-// SQLite disables it for WASM builds.
+// SQLite disables WAL for WASM builds.
 // We set the default locking mode to EXCLUSIVE instead.
 // https://www.sqlite.org/wal.html#noshm
 #undef SQLITE_OMIT_WAL
@@ -48,15 +48,9 @@
 #define SQLITE_ENABLE_RTREE 1
 #define SQLITE_ENABLE_GEOPOLY 1
 
-// Snapshot
-// #define SQLITE_ENABLE_SNAPSHOT 1
-
 // Session Extension
 // #define SQLITE_ENABLE_SESSION 1
 // #define SQLITE_ENABLE_PREUPDATE_HOOK 1
 
-// Resumable Bulk Update Extension
-// #define SQLITE_ENABLE_RBU 1
-
 // Implemented in Go.
 int localtime_s(struct tm *const pTm, time_t const *const pTime);
\ No newline at end of file