diff --git a/blockkit/components.py b/blockkit/components.py
index 5ab35f6..9f8a52b 100644
--- a/blockkit/components.py
+++ b/blockkit/components.py
@@ -1,6 +1,5 @@
 import json
 from typing import Any, List, Type
-from typing import get_type_hints
 
 from pydantic import BaseModel, model_validator
 
@@ -19,9 +18,8 @@ def get_args(tp):
 class Component(BaseModel):
     @model_validator(mode="after")
     def expand_strings(self) -> Any:
-        hints = get_type_hints(self)
-        for field_name, types in hints.items():
-            inner_types = self._get_inner_types(types)
+        for field_name, field in self.model_fields.items():
+            inner_types = self._get_inner_types(field.annotation)
             if not inner_types:
                 continue
 
diff --git a/blockkit/elements.py b/blockkit/elements.py
index 69831c8..7640fa3 100644
--- a/blockkit/elements.py
+++ b/blockkit/elements.py
@@ -51,7 +51,7 @@
     "RichTextQuote",
     "RichTextSection",
     "RichTextList",
-    "FileInput"
+    "FileInput",
 ]
 
 
@@ -719,6 +719,7 @@ def __init__(
     ):
         super().__init__(elements=elements, style=style, indent=indent)
 
+
 class FileInput(ActionableComponent):
     type: str = "file_input"
     filetypes: Optional[List[str]] = Field(None)
@@ -735,4 +736,5 @@ def __init__(
             action_id=action_id,
             filetypes=filetypes,
             max_files=max_files,
-        )
\ No newline at end of file
+        )
+
diff --git a/blockkit/objects.py b/blockkit/objects.py
index 1462087..aa62a64 100644
--- a/blockkit/objects.py
+++ b/blockkit/objects.py
@@ -29,6 +29,11 @@ class MarkdownText(Component):
     def __init__(self, *, text: str, verbatim: Optional[bool] = None):
         super().__init__(text=text, verbatim=verbatim)
 
+    def __eq__(self, other):
+        if not isinstance(other, type(self)):
+            return False
+        return self.text == other.text
+
 
 class PlainText(Component):
     type: str = "plain_text"
@@ -38,6 +43,11 @@ class PlainText(Component):
     def __init__(self, *, text: str, emoji: Optional[bool] = None):
         super().__init__(text=text, emoji=emoji)
 
+    def __eq__(self, other):
+        if not isinstance(other, type(self)):
+            return False
+        return self.text == other.text
+
 
 class Style(Component):
     bold: Optional[bool] = None
diff --git a/tests/test_elements.py b/tests/test_elements.py
index 6c96e5c..1b23117 100644
--- a/tests/test_elements.py
+++ b/tests/test_elements.py
@@ -318,10 +318,10 @@ def test_image_excessive_alt_text_raises_exception():
 
 def test_builds_static_select_with_options():
     assert StaticSelect(
-        placeholder=PlainText(text="placeholder"),
+        placeholder="placeholder",
         action_id="action_id",
         options=[
-            PlainOption(text=PlainText(text="option 1"), value="value_1"),
+            PlainOption(text="option 1", value="value_1"),
             PlainOption(text=PlainText(text="option 2"), value="value_2"),
         ],
         initial_option=PlainOption(text=PlainText(text="option 1"), value="value_1"),
@@ -334,10 +334,13 @@ def test_builds_static_select_with_options():
         focus_on_load=True,
     ).build() == {
         "type": "static_select",
-        "placeholder": {"type": "plain_text", "text": "placeholder"},
+        "placeholder": {"type": "plain_text", "text": "placeholder", "emoji": True},
         "action_id": "action_id",
         "options": [
-            {"text": {"type": "plain_text", "text": "option 1"}, "value": "value_1"},
+            {
+                "text": {"type": "plain_text", "text": "option 1", "emoji": True},
+                "value": "value_1",
+            },
             {"text": {"type": "plain_text", "text": "option 2"}, "value": "value_2"},
         ],
         "initial_option": {
@@ -1559,6 +1562,7 @@ def test_timepicker_excessive_placeholder_raises_exception():
     with pytest.raises(ValidationError):
         TimePicker(placeholder=PlainText(text="p" * 151))
 
+
 def test_builds_fileinput():
     assert FileInput(
         action_id="action_id",
@@ -1571,6 +1575,8 @@ def test_builds_fileinput():
         "max_files": 1,
     }
 
+
 def test_fileinput_excessive_max_files_raises_exception():
     with pytest.raises(ValidationError):
-        FileInput(max_files=11)
\ No newline at end of file
+        FileInput(max_files=11)
+