diff --git a/migrations.py b/migrations.py
index 6654c71..c8147f5 100644
--- a/migrations.py
+++ b/migrations.py
@@ -140,82 +140,33 @@ async def m003_add_max_daily_limit_config(db):
 async def m004_convert_to_gtq_storage(db):
     """
     Convert centavo storage to GTQ storage by changing data types and converting existing data.
+    Handles both SQLite (data conversion only) and PostgreSQL (data + schema changes).
     """
-    # Convert dca_deposits amounts from centavos to GTQ
-    await db.execute(
-        """
-        UPDATE satoshimachine.dca_deposits 
-        SET amount = CAST(amount AS DECIMAL(10,2)) / 100.0
-        WHERE currency = 'GTQ'
-        """
-    )
+    # Detect database type
+    db_type = str(type(db)).lower()
+    is_postgres = 'postgres' in db_type or 'asyncpg' in db_type
     
-    # Convert dca_payments amounts from centavos to GTQ  
-    await db.execute(
-        """
-        UPDATE satoshimachine.dca_payments
-        SET amount_fiat = CAST(amount_fiat AS DECIMAL(10,2)) / 100.0
-        """
-    )
-    
-    # Convert lamassu_transactions amounts from centavos to GTQ
-    await db.execute(
-        """
-        UPDATE satoshimachine.lamassu_transactions
-        SET fiat_amount = CAST(fiat_amount AS DECIMAL(10,2)) / 100.0
-        """
-    )
-    
-    # Convert fixed_mode_daily_limit from centavos to GTQ
-    await db.execute(
-        """
-        UPDATE satoshimachine.dca_clients
-        SET fixed_mode_daily_limit = CAST(fixed_mode_daily_limit AS DECIMAL(10,2)) / 100.0
-        WHERE fixed_mode_daily_limit IS NOT NULL
-        """
-    )
-    
-    # Convert max_daily_limit_gtq in config (if already in centavos)
-    await db.execute(
-        """
-        UPDATE satoshimachine.lamassu_config
-        SET max_daily_limit_gtq = CAST(max_daily_limit_gtq AS DECIMAL(10,2)) / 100.0
-        WHERE max_daily_limit_gtq > 1000
-        """
-    )
-    
-    # Change column types to DECIMAL
-    await db.execute(
-        """
-        ALTER TABLE satoshimachine.dca_deposits 
-        ALTER COLUMN amount TYPE DECIMAL(10,2)
-        """
-    )
-    
-    await db.execute(
-        """
-        ALTER TABLE satoshimachine.dca_payments
-        ALTER COLUMN amount_fiat TYPE DECIMAL(10,2)
-        """
-    )
-    
-    await db.execute(
-        """
-        ALTER TABLE satoshimachine.lamassu_transactions
-        ALTER COLUMN fiat_amount TYPE DECIMAL(10,2)
-        """
-    )
-    
-    await db.execute(
-        """
-        ALTER TABLE satoshimachine.dca_clients
-        ALTER COLUMN fixed_mode_daily_limit TYPE DECIMAL(10,2)
-        """
-    )
-    
-    await db.execute(
-        """
-        ALTER TABLE satoshimachine.lamassu_config
-        ALTER COLUMN max_daily_limit_gtq TYPE DECIMAL(10,2)
-        """
-    )
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+    if is_postgres:
+        # PostgreSQL: Need to change column types first, then convert data
+        
+        # Change column types to DECIMAL(10,2)
+        await db.execute("ALTER TABLE satoshimachine.dca_deposits ALTER COLUMN amount TYPE DECIMAL(10,2)")
+        await db.execute("ALTER TABLE satoshimachine.dca_payments ALTER COLUMN amount_fiat TYPE DECIMAL(10,2)")
+        await db.execute("ALTER TABLE satoshimachine.lamassu_transactions ALTER COLUMN fiat_amount TYPE DECIMAL(10,2)")
+        await db.execute("ALTER TABLE satoshimachine.dca_clients ALTER COLUMN fixed_mode_daily_limit TYPE DECIMAL(10,2)")
+        await db.execute("ALTER TABLE satoshimachine.lamassu_config ALTER COLUMN max_daily_limit_gtq TYPE DECIMAL(10,2)")
+        
+        # Convert data from centavos to GTQ
+        await db.execute("UPDATE satoshimachine.dca_deposits SET amount = amount / 100.0 WHERE currency = 'GTQ'")
+        await db.execute("UPDATE satoshimachine.dca_payments SET amount_fiat = amount_fiat / 100.0")
+        await db.execute("UPDATE satoshimachine.lamassu_transactions SET fiat_amount = fiat_amount / 100.0")
+        await db.execute("UPDATE satoshimachine.dca_clients SET fixed_mode_daily_limit = fixed_mode_daily_limit / 100.0 WHERE fixed_mode_daily_limit IS NOT NULL")
+        await db.execute("UPDATE satoshimachine.lamassu_config SET max_daily_limit_gtq = max_daily_limit_gtq / 100.0 WHERE max_daily_limit_gtq > 1000")
+        
+    else:
+        # SQLite: Data conversion only (dynamic typing handles the rest)
+        await db.execute("UPDATE satoshimachine.dca_deposits SET amount = CAST(amount AS REAL) / 100.0 WHERE currency = 'GTQ'")
+        await db.execute("UPDATE satoshimachine.dca_payments SET amount_fiat = CAST(amount_fiat AS REAL) / 100.0")
+        await db.execute("UPDATE satoshimachine.lamassu_transactions SET fiat_amount = CAST(fiat_amount AS REAL) / 100.0")
+        await db.execute("UPDATE satoshimachine.dca_clients SET fixed_mode_daily_limit = CAST(fixed_mode_daily_limit AS REAL) / 100.0 WHERE fixed_mode_daily_limit IS NOT NULL")
+        await db.execute("UPDATE satoshimachine.lamassu_config SET max_daily_limit_gtq = CAST(max_daily_limit_gtq AS REAL) / 100.0 WHERE max_daily_limit_gtq > 1000")
\ No newline at end of file