diff --git a/harp/schema.py b/harp/schema.py
index d60b797..e97ae1a 100644
--- a/harp/schema.py
+++ b/harp/schema.py
@@ -2,7 +2,8 @@
 from os import PathLike
 from typing import TextIO, Union
 
-from pydantic_yaml import parse_yaml_raw_as
+import yaml
+from pydantic import TypeAdapter
 
 from harp.model import Model, Registers
 
@@ -13,7 +14,8 @@ def _read_common_registers() -> Registers:
 
     file = resources.files(__package__) / "common.yml"
     with file.open("r") as fileIO:
-        return parse_yaml_raw_as(Registers, fileIO.read())
+        raw_reg = yaml.safe_load(fileIO.read())
+        return TypeAdapter(Registers).validate_python(raw_reg)
 
 
 def read_schema(file: Union[str, PathLike, TextIO], include_common_registers: bool = True) -> Model:
@@ -37,7 +39,8 @@ def read_schema(file: Union[str, PathLike, TextIO], include_common_registers: bo
         with open(file) as fileIO:
             return read_schema(fileIO)
     else:
-        schema = parse_yaml_raw_as(Model, file.read())
+        raw_schema = yaml.safe_load(file.read())
+        schema = TypeAdapter(Model).validate_python(raw_schema)
         if "WhoAmI" not in schema.registers and include_common_registers:
             common = _read_common_registers()
             schema.registers = dict(common.registers, **schema.registers)
diff --git a/pyproject.toml b/pyproject.toml
index c8fcaac..2f1a66a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,7 +10,8 @@ dynamic = ["version"]
 license = "MIT"
 
 dependencies = [
-    "pydantic-yaml",
+    "pydantic",
+    "pyyaml",
     "pandas"
 ]