diff --git a/promptlayer/__init__.py b/promptlayer/__init__.py
index b0c9806..a4bd6b4 100644
--- a/promptlayer/__init__.py
+++ b/promptlayer/__init__.py
@@ -16,7 +16,7 @@
 )
 from .promptlayer import AsyncPromptLayer, PromptLayer
 
-__version__ = "1.4.0"
+__version__ = "1.4.1"
 __all__ = [
     "PromptLayer",
     "AsyncPromptLayer",
diff --git a/promptlayer/promptlayer.py b/promptlayer/promptlayer.py
index c218894..12cbf7e 100644
--- a/promptlayer/promptlayer.py
+++ b/promptlayer/promptlayer.py
@@ -85,6 +85,10 @@ def __init__(
         )
         self.track = TrackManager(api_key, self.base_url, self.throw_on_error)
 
+    def invalidate(self, prompt_name: Optional[str] = None) -> None:
+        """Invalidate SDK template cache for a prompt or entirely."""
+        self.templates.invalidate(prompt_name)
+
     def __getattr__(
         self,
         name: Union[Literal["openai"], Literal["anthropic"], Literal["prompts"]],
@@ -468,6 +472,10 @@ def __init__(
         )
         self.track = AsyncTrackManager(api_key, self.base_url, self.throw_on_error)
 
+    def invalidate(self, prompt_name: Optional[str] = None) -> None:
+        """Invalidate SDK template cache for a prompt or entirely."""
+        self.templates.invalidate(prompt_name)
+
     def __getattr__(self, name: Union[Literal["openai"], Literal["anthropic"], Literal["prompts"]]):
         if name == "openai":
             import openai as openai_module
diff --git a/promptlayer/templates.py b/promptlayer/templates.py
index 025803f..5e2cbc2 100644
--- a/promptlayer/templates.py
+++ b/promptlayer/templates.py
@@ -1,5 +1,5 @@
 import logging
-from typing import Union
+from typing import Optional, Union
 
 from promptlayer import exceptions as _exceptions
 from promptlayer.span_exporter import set_prompt_span_attributes
@@ -112,6 +112,14 @@ def publish(self, body: PublishPromptTemplate):
                 self._cache.invalidate(prompt_name)
         return result
 
+    def invalidate(self, prompt_name: Optional[str] = None) -> None:
+        if not self._cache:
+            return
+        if prompt_name:
+            self._cache.invalidate(prompt_name)
+        else:
+            self._cache.clear()
+
     def all(self, page: int = 1, per_page: int = 30, label: str = None):
         return get_all_prompt_templates(self.api_key, self.base_url, self.throw_on_error, page, per_page, label)
 
@@ -188,3 +196,11 @@ async def _aget_with_cache(self, prompt_name, params):
 
     async def all(self, page: int = 1, per_page: int = 30, label: str = None):
         return await aget_all_prompt_templates(self.api_key, self.base_url, self.throw_on_error, page, per_page, label)
+
+    def invalidate(self, prompt_name: Optional[str] = None) -> None:
+        if not self._cache:
+            return
+        if prompt_name:
+            self._cache.invalidate(prompt_name)
+        else:
+            self._cache.clear()
diff --git a/pyproject.toml b/pyproject.toml
index 309e49c..039ce3a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "promptlayer"
-version = "1.4.0"
+version = "1.4.1"
 description = "PromptLayer is a platform for prompt engineering and tracks your LLM requests."
 authors = ["Magniv <hello@magniv.io>"]
 license = "Apache-2.0"
diff --git a/tests/test_client_cache_invalidation.py b/tests/test_client_cache_invalidation.py
new file mode 100644
index 0000000..4235df7
--- /dev/null
+++ b/tests/test_client_cache_invalidation.py
@@ -0,0 +1,48 @@
+from promptlayer import AsyncPromptLayer, PromptLayer
+
+
+def test_promptlayer_client_invalidate_prompt_name(promptlayer_api_key, base_url):
+    client = PromptLayer(api_key=promptlayer_api_key, base_url=base_url, cache_ttl_seconds=60)
+    cache = client.templates._cache
+
+    alpha_key = cache.make_key("alpha")
+    beta_key = cache.make_key("beta")
+    cache.put(alpha_key, {"prompt_template": {"type": "chat", "messages": []}})
+    cache.put(beta_key, {"prompt_template": {"type": "chat", "messages": []}})
+
+    client.invalidate("alpha")
+
+    alpha_cached, _ = cache.get(alpha_key)
+    beta_cached, _ = cache.get(beta_key)
+    assert alpha_cached is None
+    assert beta_cached is not None
+
+
+def test_promptlayer_client_invalidate_all(promptlayer_api_key, base_url):
+    client = PromptLayer(api_key=promptlayer_api_key, base_url=base_url, cache_ttl_seconds=60)
+    cache = client.templates._cache
+
+    first_key = cache.make_key("first")
+    second_key = cache.make_key("second")
+    cache.put(first_key, {"prompt_template": {"type": "chat", "messages": []}})
+    cache.put(second_key, {"prompt_template": {"type": "chat", "messages": []}})
+
+    client.invalidate()
+
+    first_cached, _ = cache.get(first_key)
+    second_cached, _ = cache.get(second_key)
+    assert first_cached is None
+    assert second_cached is None
+
+
+def test_async_promptlayer_client_invalidate(promptlayer_api_key, base_url):
+    client = AsyncPromptLayer(api_key=promptlayer_api_key, base_url=base_url, cache_ttl_seconds=60)
+    cache = client.templates._cache
+
+    key = cache.make_key("async-template")
+    cache.put(key, {"prompt_template": {"type": "chat", "messages": []}})
+
+    client.invalidate("async-template")
+
+    cached, _ = cache.get(key)
+    assert cached is None