diff --git a/services/ml/features/talib_features.py b/services/ml/features/talib_features.py
index 16b5cc4..312779a 100644
--- a/services/ml/features/talib_features.py
+++ b/services/ml/features/talib_features.py
@@ -56,12 +56,12 @@ def compute_talib_indicators(
     # Make a copy to avoid modifying the original
     result_df = df.copy()
     
-    # Extract OHLCV arrays (TA-Lib expects numpy arrays)
-    open_prices = df['open'].values
-    high_prices = df['high'].values
-    low_prices = df['low'].values
-    close_prices = df['close'].values
-    volume = df['volume'].values
+    # Extract OHLCV arrays (TA-Lib expects float64/double numpy arrays)
+    open_prices = df['open'].values.astype(np.float64)
+    high_prices = df['high'].values.astype(np.float64)
+    low_prices = df['low'].values.astype(np.float64)
+    close_prices = df['close'].values.astype(np.float64)
+    volume = df['volume'].values.astype(np.float64)
     
     logger.info(f"Computing {len(indicators)} TA-Lib indicators")