diff --git a/haystack/components/builders/prompt_builder.py b/haystack/components/builders/prompt_builder.py
index f6c51af34..f78610b06 100644
--- a/haystack/components/builders/prompt_builder.py
+++ b/haystack/components/builders/prompt_builder.py
@@ -1,8 +1,8 @@
-from typing import Any
+from typing import Any, Dict
 
 from jinja2 import Template, meta
 
-from haystack import component
+from haystack import component, default_to_dict
 
 
 @component
@@ -32,6 +32,9 @@ class PromptBuilder:
         for var in template_variables:
             component.set_input_type(self, var, Any, "")
 
+    def to_dict(self) -> Dict[str, Any]:
+        return default_to_dict(self, template=self._template_string)
+
     @component.output_types(prompt=str)
     def run(self, **kwargs):
         """
diff --git a/test/components/builders/test_prompt_builder.py b/test/components/builders/test_prompt_builder.py
index e08de568c..e1c86f7bd 100644
--- a/test/components/builders/test_prompt_builder.py
+++ b/test/components/builders/test_prompt_builder.py
@@ -8,6 +8,15 @@ def test_init():
     assert builder._template_string == "This is a {{ variable }}"
 
 
+def test_to_dict():
+    builder = PromptBuilder(template="This is a {{ variable }}")
+    res = builder.to_dict()
+    assert res == {
+        "type": "haystack.components.builders.prompt_builder.PromptBuilder",
+        "init_parameters": {"template": "This is a {{ variable }}"},
+    }
+
+
 def test_run():
     builder = PromptBuilder(template="This is a {{ variable }}")
     res = builder.run(variable="test")