diff --git a/mypy/plugins/dataclasses.py b/mypy/plugins/dataclasses.py
index 89a21871c373..26bc8ae80fdb 100644
--- a/mypy/plugins/dataclasses.py
+++ b/mypy/plugins/dataclasses.py
@@ -593,6 +593,7 @@ def _add_dataclass_fields_magic_attribute(self) -> None:
         var = Var(name=attr_name, type=attr_type)
         var.info = self._ctx.cls.info
         var._fullname = self._ctx.cls.info.fullname + "." + attr_name
+        var.is_classvar = True
         self._ctx.cls.info.names[attr_name] = SymbolTableNode(
             kind=MDEF, node=var, plugin_generated=True
         )
diff --git a/test-data/unit/check-dataclasses.test b/test-data/unit/check-dataclasses.test
index b821aefe8f7c..e4f2bfb44160 100644
--- a/test-data/unit/check-dataclasses.test
+++ b/test-data/unit/check-dataclasses.test
@@ -1819,10 +1819,10 @@ c.x  # E: "C" has no attribute "x"
 [case testDataclassCheckTypeVarBounds]
 # flags: --python-version 3.7
 from dataclasses import dataclass
-from typing import Protocol, Dict, TypeVar, Generic
+from typing import ClassVar, Protocol, Dict, TypeVar, Generic
 
 class DataclassProtocol(Protocol):
-    __dataclass_fields__: Dict
+    __dataclass_fields__: ClassVar[Dict]
 
 T = TypeVar("T", bound=DataclassProtocol)
 
@@ -1896,3 +1896,20 @@ FirstClass().FIRST_CONST = 42  # E: Cannot assign to final attribute "FIRST_CONS
 reveal_type(SecondClass().SECOND_CONST)  # N: Revealed type is "Literal[3]?"
 SecondClass().SECOND_CONST = 42  # E: Cannot assign to final attribute "SECOND_CONST"
 [builtins fixtures/dataclasses.pyi]
+
+[case testDataclassFieldsProtocol]
+# flags: --python-version 3.9
+from dataclasses import dataclass
+from typing import Any, Protocol
+
+class ConfigProtocol(Protocol):
+    __dataclass_fields__: dict[str, Any]
+
+def takes_cp(cp: ConfigProtocol): ...
+
+@dataclass
+class MyDataclass:
+    x: int = 3
+
+takes_cp(MyDataclass)
+[builtins fixtures/dataclasses.pyi]
diff --git a/test-data/unit/fine-grained.test b/test-data/unit/fine-grained.test
index 9d8857301425..971da91d7a40 100644
--- a/test-data/unit/fine-grained.test
+++ b/test-data/unit/fine-grained.test
@@ -9795,11 +9795,11 @@ class ExampleClass(Generic[T]):
 [case testDataclassCheckTypeVarBoundsInReprocess]
 # flags: --python-version 3.7
 from dataclasses import dataclass
-from typing import Protocol, Dict, TypeVar, Generic
+from typing import ClassVar, Protocol, Dict, TypeVar, Generic
 from m import x
 
 class DataclassProtocol(Protocol):
-    __dataclass_fields__: Dict
+    __dataclass_fields__: ClassVar[Dict]
 
 T = TypeVar("T", bound=DataclassProtocol)