diff --git a/cschwabpy/models/__init__.py b/cschwabpy/models/__init__.py
index a5678f1..8125405 100644
--- a/cschwabpy/models/__init__.py
+++ b/cschwabpy/models/__init__.py
@@ -449,18 +449,18 @@ def break_down_option_map(
             if should_compress:
                 strike_df = strike_df.astype(
                     {
-                        "underlying_price": "float16",
-                        "strike": "float16",
-                        "lastPrice": "float16",
+                        "underlying_price": "float32",
+                        "strike": "float32",
+                        "lastPrice": "float32",
                         "openInterest": "int32",
                         "volume": "int32",
-                        "ask": "float16",
-                        "bid": "float16",
-                        "lastPrice": "float16",
-                        "gamma": "float16",
-                        "delta": "float16",
-                        "vega": "float16",
-                        "volatility": "float16",
+                        "ask": "float32",
+                        "bid": "float32",
+                        "lastPrice": "float32",
+                        "gamma": "float32",
+                        "delta": "float32",
+                        "vega": "float32",
+                        "volatility": "float32",
                     }
                 )
 
diff --git a/pyproject.toml b/pyproject.toml
index 2ea43a3..db06485 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "cschwabpy"
-version = "0.1.4.4"
+version = "0.1.4.5"
 description = ""
 authors = ["Tony Wang <ivytony@gmail.com>"]
 readme = "README.md"
diff --git a/setup.py b/setup.py
index 1f539eb..638b10a 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@
 
 setup(
     name="CSchwabPy",
-    version="0.1.4.4",
+    version="0.1.4.5",
     description="Charles Schwab Stock & Option Trade API Client for Python.",
     long_description=long_description,
     long_description_content_type="text/markdown",