diff --git a/src/betterproto/lib/google/protobuf/__init__.py b/src/betterproto/lib/google/protobuf/__init__.py
index 529b9d1..b361c04 100644
--- a/src/betterproto/lib/google/protobuf/__init__.py
+++ b/src/betterproto/lib/google/protobuf/__init__.py
@@ -172,9 +172,6 @@ class Timestamp(betterproto.Message):
     # count forward in time. Must be from 0 to 999,999,999 inclusive.
     nanos: int = betterproto.int32_field(2)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class FieldMask(betterproto.Message):
@@ -259,9 +256,6 @@ class FieldMask(betterproto.Message):
     # The set of field mask paths.
     paths: List[str] = betterproto.string_field(1)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class SourceContext(betterproto.Message):
@@ -274,9 +268,6 @@ class SourceContext(betterproto.Message):
     # protobuf element.  For example: `"google/protobuf/source_context.proto"`.
     file_name: str = betterproto.string_field(1)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class Any(betterproto.Message):
@@ -335,9 +326,6 @@ class Any(betterproto.Message):
     # Must be a valid serialized protocol buffer of the above specified type.
     value: bytes = betterproto.bytes_field(2)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class Type(betterproto.Message):
@@ -356,9 +344,6 @@ class Type(betterproto.Message):
     # The source syntax.
     syntax: "Syntax" = betterproto.enum_field(6)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class Field(betterproto.Message):
@@ -387,9 +372,6 @@ class Field(betterproto.Message):
     # The string value of the default value of this field. Proto2 syntax only.
     default_value: str = betterproto.string_field(11)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class Enum(betterproto.Message):
@@ -408,9 +390,6 @@ class Enum(betterproto.Message):
     # The source syntax.
     syntax: "Syntax" = betterproto.enum_field(5)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class EnumValue(betterproto.Message):
@@ -423,9 +402,6 @@ class EnumValue(betterproto.Message):
     # Protocol buffer options.
     options: List["Option"] = betterproto.message_field(3)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class Option(betterproto.Message):
@@ -445,9 +421,6 @@ class Option(betterproto.Message):
     # value using the google.protobuf.Int32Value type.
     value: "Any" = betterproto.message_field(2)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class Api(betterproto.Message):
@@ -491,9 +464,6 @@ class Api(betterproto.Message):
     # The source syntax of the service.
     syntax: "Syntax" = betterproto.enum_field(7)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class Method(betterproto.Message):
@@ -514,9 +484,6 @@ class Method(betterproto.Message):
     # The source syntax of this method.
     syntax: "Syntax" = betterproto.enum_field(7)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class Mixin(betterproto.Message):
@@ -562,9 +529,6 @@ class Mixin(betterproto.Message):
     # If non-empty specifies a path under which inherited HTTP paths are rooted.
     root: str = betterproto.string_field(2)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class Duration(betterproto.Message):
@@ -610,9 +574,6 @@ class Duration(betterproto.Message):
     # `seconds` field. Must be from -999,999,999 to +999,999,999 inclusive.
     nanos: int = betterproto.int32_field(2)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class Struct(betterproto.Message):
@@ -630,9 +591,6 @@ class Struct(betterproto.Message):
         1, betterproto.TYPE_STRING, betterproto.TYPE_MESSAGE
     )
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class Value(betterproto.Message):
@@ -657,9 +615,6 @@ class Value(betterproto.Message):
     # Represents a repeated `Value`.
     list_value: "ListValue" = betterproto.message_field(6, group="kind")
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class ListValue(betterproto.Message):
@@ -671,9 +626,6 @@ class ListValue(betterproto.Message):
     # Repeated field of dynamically typed values.
     values: List["Value"] = betterproto.message_field(1)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class DoubleValue(betterproto.Message):
@@ -685,9 +637,6 @@ class DoubleValue(betterproto.Message):
     # The double value.
     value: float = betterproto.double_field(1)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class FloatValue(betterproto.Message):
@@ -699,9 +648,6 @@ class FloatValue(betterproto.Message):
     # The float value.
     value: float = betterproto.float_field(1)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class Int64Value(betterproto.Message):
@@ -713,9 +659,6 @@ class Int64Value(betterproto.Message):
     # The int64 value.
     value: int = betterproto.int64_field(1)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class UInt64Value(betterproto.Message):
@@ -727,9 +670,6 @@ class UInt64Value(betterproto.Message):
     # The uint64 value.
     value: int = betterproto.uint64_field(1)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class Int32Value(betterproto.Message):
@@ -741,9 +681,6 @@ class Int32Value(betterproto.Message):
     # The int32 value.
     value: int = betterproto.int32_field(1)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class UInt32Value(betterproto.Message):
@@ -755,9 +692,6 @@ class UInt32Value(betterproto.Message):
     # The uint32 value.
     value: int = betterproto.uint32_field(1)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class BoolValue(betterproto.Message):
@@ -769,9 +703,6 @@ class BoolValue(betterproto.Message):
     # The bool value.
     value: bool = betterproto.bool_field(1)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class StringValue(betterproto.Message):
@@ -783,9 +714,6 @@ class StringValue(betterproto.Message):
     # The string value.
     value: str = betterproto.string_field(1)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class BytesValue(betterproto.Message):
@@ -797,9 +725,6 @@ class BytesValue(betterproto.Message):
     # The bytes value.
     value: bytes = betterproto.bytes_field(1)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class Empty(betterproto.Message):
@@ -813,9 +738,6 @@ class Empty(betterproto.Message):
 
     pass
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class FileDescriptorSet(betterproto.Message):
@@ -826,9 +748,6 @@ class FileDescriptorSet(betterproto.Message):
 
     file: List["FileDescriptorProto"] = betterproto.message_field(1)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class FileDescriptorProto(betterproto.Message):
@@ -858,9 +777,6 @@ class FileDescriptorProto(betterproto.Message):
     # "proto3".
     syntax: str = betterproto.string_field(12)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class DescriptorProto(betterproto.Message):
@@ -881,9 +797,6 @@ class DescriptorProto(betterproto.Message):
     # A given name may only be reserved once.
     reserved_name: List[str] = betterproto.string_field(10)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class DescriptorProtoExtensionRange(betterproto.Message):
@@ -891,9 +804,6 @@ class DescriptorProtoExtensionRange(betterproto.Message):
     end: int = betterproto.int32_field(2)
     options: "ExtensionRangeOptions" = betterproto.message_field(3)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class DescriptorProtoReservedRange(betterproto.Message):
@@ -906,18 +816,12 @@ class DescriptorProtoReservedRange(betterproto.Message):
     start: int = betterproto.int32_field(1)
     end: int = betterproto.int32_field(2)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class ExtensionRangeOptions(betterproto.Message):
     # The parser stores options it doesn't recognize here. See above.
     uninterpreted_option: List["UninterpretedOption"] = betterproto.message_field(999)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class FieldDescriptorProto(betterproto.Message):
@@ -952,9 +856,6 @@ class FieldDescriptorProto(betterproto.Message):
     json_name: str = betterproto.string_field(10)
     options: "FieldOptions" = betterproto.message_field(8)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class OneofDescriptorProto(betterproto.Message):
@@ -963,9 +864,6 @@ class OneofDescriptorProto(betterproto.Message):
     name: str = betterproto.string_field(1)
     options: "OneofOptions" = betterproto.message_field(2)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class EnumDescriptorProto(betterproto.Message):
@@ -984,9 +882,6 @@ class EnumDescriptorProto(betterproto.Message):
     # be reserved once.
     reserved_name: List[str] = betterproto.string_field(5)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class EnumDescriptorProtoEnumReservedRange(betterproto.Message):
@@ -1000,9 +895,6 @@ class EnumDescriptorProtoEnumReservedRange(betterproto.Message):
     start: int = betterproto.int32_field(1)
     end: int = betterproto.int32_field(2)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class EnumValueDescriptorProto(betterproto.Message):
@@ -1012,9 +904,6 @@ class EnumValueDescriptorProto(betterproto.Message):
     number: int = betterproto.int32_field(2)
     options: "EnumValueOptions" = betterproto.message_field(3)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class ServiceDescriptorProto(betterproto.Message):
@@ -1024,9 +913,6 @@ class ServiceDescriptorProto(betterproto.Message):
     method: List["MethodDescriptorProto"] = betterproto.message_field(2)
     options: "ServiceOptions" = betterproto.message_field(3)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class MethodDescriptorProto(betterproto.Message):
@@ -1043,9 +929,6 @@ class MethodDescriptorProto(betterproto.Message):
     # Identifies if server streams multiple server messages
     server_streaming: bool = betterproto.bool_field(6)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class FileOptions(betterproto.Message):
@@ -1174,9 +1057,6 @@ class MessageOptions(betterproto.Message):
     # The parser stores options it doesn't recognize here. See above.
     uninterpreted_option: List["UninterpretedOption"] = betterproto.message_field(999)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class FieldOptions(betterproto.Message):
@@ -1234,18 +1114,12 @@ class FieldOptions(betterproto.Message):
     # The parser stores options it doesn't recognize here. See above.
     uninterpreted_option: List["UninterpretedOption"] = betterproto.message_field(999)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class OneofOptions(betterproto.Message):
     # The parser stores options it doesn't recognize here. See above.
     uninterpreted_option: List["UninterpretedOption"] = betterproto.message_field(999)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class EnumOptions(betterproto.Message):
@@ -1259,9 +1133,6 @@ class EnumOptions(betterproto.Message):
     # The parser stores options it doesn't recognize here. See above.
     uninterpreted_option: List["UninterpretedOption"] = betterproto.message_field(999)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class EnumValueOptions(betterproto.Message):
@@ -1273,9 +1144,6 @@ class EnumValueOptions(betterproto.Message):
     # The parser stores options it doesn't recognize here. See above.
     uninterpreted_option: List["UninterpretedOption"] = betterproto.message_field(999)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class ServiceOptions(betterproto.Message):
@@ -1286,9 +1154,6 @@ class ServiceOptions(betterproto.Message):
     # The parser stores options it doesn't recognize here. See above.
     uninterpreted_option: List["UninterpretedOption"] = betterproto.message_field(999)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class MethodOptions(betterproto.Message):
@@ -1300,9 +1165,6 @@ class MethodOptions(betterproto.Message):
     # The parser stores options it doesn't recognize here. See above.
     uninterpreted_option: List["UninterpretedOption"] = betterproto.message_field(999)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class UninterpretedOption(betterproto.Message):
@@ -1325,9 +1187,6 @@ class UninterpretedOption(betterproto.Message):
     string_value: bytes = betterproto.bytes_field(7)
     aggregate_value: str = betterproto.string_field(8)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class UninterpretedOptionNamePart(betterproto.Message):
@@ -1342,9 +1201,6 @@ class UninterpretedOptionNamePart(betterproto.Message):
     name_part: str = betterproto.string_field(1)
     is_extension: bool = betterproto.bool_field(2)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class SourceCodeInfo(betterproto.Message):
@@ -1384,9 +1240,6 @@ class SourceCodeInfo(betterproto.Message):
     # as more types of locations could   be recorded in the future.
     location: List["SourceCodeInfoLocation"] = betterproto.message_field(1)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class SourceCodeInfoLocation(betterproto.Message):
@@ -1434,9 +1287,6 @@ class SourceCodeInfoLocation(betterproto.Message):
     trailing_comments: str = betterproto.string_field(4)
     leading_detached_comments: List[str] = betterproto.string_field(6)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class GeneratedCodeInfo(betterproto.Message):
@@ -1450,9 +1300,6 @@ class GeneratedCodeInfo(betterproto.Message):
     # its generating .proto file.
     annotation: List["GeneratedCodeInfoAnnotation"] = betterproto.message_field(1)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class GeneratedCodeInfoAnnotation(betterproto.Message):
@@ -1468,6 +1315,3 @@ class GeneratedCodeInfoAnnotation(betterproto.Message):
     # the identified offset. The end offset should be one past the last relevant
     # byte (so the length of the text = end - begin).
     end: int = betterproto.int32_field(4)
-
-    def __post_init__(self) -> None:
-        super().__post_init__()
diff --git a/src/betterproto/lib/google/protobuf/compiler/__init__.py b/src/betterproto/lib/google/protobuf/compiler/__init__.py
index cfe185b..e5c8b60 100644
--- a/src/betterproto/lib/google/protobuf/compiler/__init__.py
+++ b/src/betterproto/lib/google/protobuf/compiler/__init__.py
@@ -18,9 +18,6 @@ class Version(betterproto.Message):
     # be empty for mainline stable releases.
     suffix: str = betterproto.string_field(4)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class CodeGeneratorRequest(betterproto.Message):
@@ -49,9 +46,6 @@ class CodeGeneratorRequest(betterproto.Message):
     # The version number of protocol compiler.
     compiler_version: "Version" = betterproto.message_field(3)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class CodeGeneratorResponse(betterproto.Message):
@@ -67,9 +61,6 @@ class CodeGeneratorResponse(betterproto.Message):
     error: str = betterproto.string_field(1)
     file: List["CodeGeneratorResponseFile"] = betterproto.message_field(15)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 @dataclass(eq=False, repr=False)
 class CodeGeneratorResponseFile(betterproto.Message):
@@ -118,8 +109,5 @@ class CodeGeneratorResponseFile(betterproto.Message):
     # The file contents.
     content: str = betterproto.string_field(15)
 
-    def __post_init__(self) -> None:
-        super().__post_init__()
-
 
 import betterproto.lib.google.protobuf as betterproto_lib_google_protobuf
diff --git a/src/betterproto/plugin/models.py b/src/betterproto/plugin/models.py
index e0c50a5..2cd331e 100644
--- a/src/betterproto/plugin/models.py
+++ b/src/betterproto/plugin/models.py
@@ -312,6 +312,10 @@ class MessageCompiler(ProtoContentBase):
             if f.deprecated:
                 yield f.py_name
 
+    @property
+    def has_deprecated_fields(self) -> bool:
+        return any(self.deprecated_fields)
+
 
 def is_map(
     proto_field_obj: FieldDescriptorProto, parent_message: DescriptorProto
diff --git a/src/betterproto/templates/template.py.j2 b/src/betterproto/templates/template.py.j2
index b1f90c6..d27cff6 100644
--- a/src/betterproto/templates/template.py.j2
+++ b/src/betterproto/templates/template.py.j2
@@ -54,7 +54,7 @@ class {{ message.py_name }}(betterproto.Message):
     pass
     {% endif %}
 
-    {% if message.deprecated or message.deprecated_fields %}
+    {% if message.deprecated or message.has_deprecated_fields %}
     def __post_init__(self) -> None:
         {% if message.deprecated %}
         warnings.warn("{{ message.py_name }} is deprecated", DeprecationWarning)