diff --git a/src/config.ts b/src/config.ts
index e174c81a..f007341f 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -77,6 +77,10 @@ class Conf {
   static get testDatabaseUrl(): string {
     return Deno.env.get('TEST_DATABASE_URL') ?? 'memory://';
   }
+  /** PGlite debug level. 0 disables logging. */
+  static get pgliteDebug(): 0 | 1 | 2 | 3 | 4 | 5 {
+    return Number(Deno.env.get('PGLITE_DEBUG') || 0) as 0 | 1 | 2 | 3 | 4 | 5;
+  }
   static db = {
     /** Database query timeout configurations. */
     timeouts: {
diff --git a/src/db/DittoDB.ts b/src/db/DittoDB.ts
index 445c3da2..923a109d 100644
--- a/src/db/DittoDB.ts
+++ b/src/db/DittoDB.ts
@@ -16,7 +16,7 @@ export class DittoDB {
     switch (protocol) {
       case 'file:':
       case 'memory:':
-        return DittoPglite.create(databaseUrl);
+        return DittoPglite.create(databaseUrl, opts);
       case 'postgres:':
       case 'postgresql:':
         return DittoPostgres.create(databaseUrl, opts);
diff --git a/src/db/DittoDatabase.ts b/src/db/DittoDatabase.ts
index 530d9391..ec9a103d 100644
--- a/src/db/DittoDatabase.ts
+++ b/src/db/DittoDatabase.ts
@@ -10,4 +10,5 @@ export interface DittoDatabase {
 
 export interface DittoDatabaseOpts {
   poolSize?: number;
+  debug?: 0 | 1 | 2 | 3 | 4 | 5;
 }
diff --git a/src/db/adapters/DittoPglite.ts b/src/db/adapters/DittoPglite.ts
index 0e93075d..2455fc37 100644
--- a/src/db/adapters/DittoPglite.ts
+++ b/src/db/adapters/DittoPglite.ts
@@ -3,15 +3,18 @@ import { pg_trgm } from '@electric-sql/pglite/contrib/pg_trgm';
 import { PgliteDialect } from '@soapbox/kysely-pglite';
 import { Kysely } from 'kysely';
 
-import { DittoDatabase } from '@/db/DittoDatabase.ts';
+import { DittoDatabase, DittoDatabaseOpts } from '@/db/DittoDatabase.ts';
 import { DittoTables } from '@/db/DittoTables.ts';
 import { KyselyLogger } from '@/db/KyselyLogger.ts';
 
 export class DittoPglite {
-  static create(databaseUrl: string): DittoDatabase {
+  static create(databaseUrl: string, opts?: DittoDatabaseOpts): DittoDatabase {
     const kysely = new Kysely<DittoTables>({
       dialect: new PgliteDialect({
-        database: new PGlite(databaseUrl, { extensions: { pg_trgm } }),
+        database: new PGlite(databaseUrl, {
+          extensions: { pg_trgm },
+          debug: opts?.debug,
+        }),
       }),
       log: KyselyLogger,
     });
diff --git a/src/storages.ts b/src/storages.ts
index cbafd5aa..073b6135 100644
--- a/src/storages.ts
+++ b/src/storages.ts
@@ -21,7 +21,10 @@ export class Storages {
   public static async database(): Promise<DittoDatabase> {
     if (!this._database) {
       this._database = (async () => {
-        const db = DittoDB.create(Conf.databaseUrl, { poolSize: Conf.pg.poolSize });
+        const db = DittoDB.create(Conf.databaseUrl, {
+          poolSize: Conf.pg.poolSize,
+          debug: Conf.pgliteDebug,
+        });
         await DittoDB.migrate(db.kysely);
         return db;
       })();