diff --git a/libs/core/extended_testing_deps.txt b/libs/core/extended_testing_deps.txt
index 0e216a61157..5ad9c8930da 100644
--- a/libs/core/extended_testing_deps.txt
+++ b/libs/core/extended_testing_deps.txt
@@ -1,2 +1 @@
 jinja2>=3,<4
-mustache>=0.1.4,<1
diff --git a/libs/core/tests/unit_tests/prompts/test_chat.py b/libs/core/tests/unit_tests/prompts/test_chat.py
index 95cbdc5a30c..ec9d05c6de5 100644
--- a/libs/core/tests/unit_tests/prompts/test_chat.py
+++ b/libs/core/tests/unit_tests/prompts/test_chat.py
@@ -328,7 +328,6 @@ def test_chat_prompt_template_from_messages_jinja2() -> None:
 
 
 @pytest.mark.requires("jinja2")
-@pytest.mark.requires("mustache")
 @pytest.mark.parametrize(
     "template_format,image_type_placeholder,image_data_placeholder",
     [