diff --git a/src/momento/cache_client.py b/src/momento/cache_client.py
index 98a81c41..03ae4d80 100644
--- a/src/momento/cache_client.py
+++ b/src/momento/cache_client.py
@@ -8,7 +8,7 @@
 from momento.auth import CredentialProvider
 from momento.config import Configuration
 from momento.errors import UnknownException
-from momento.internal._utilities._data_validation import validate_eager_connection_timeout
+from momento.internal._utilities._data_validation import _validate_eager_connection_timeout
 from momento.requests import CollectionTtl, SortOrder
 from momento.utilities.shared_sync_asyncio import (
     DEFAULT_EAGER_CONNECTION_TIMEOUT_SECONDS,
@@ -206,7 +206,7 @@ def create(
             eager_connection_timeout = timedelta(seconds=30)
             client = CacheClient.create(configuration, credential_provider, ttl_seconds, eager_connection_timeout)
         """
-        validate_eager_connection_timeout(eager_connection_timeout)
+        _validate_eager_connection_timeout(eager_connection_timeout)
         # an explicit 0 means that the client disabled eager connections
         if eager_connection_timeout.total_seconds() != 0:
             client = CacheClient(configuration, credential_provider, default_ttl)
diff --git a/src/momento/cache_client_async.py b/src/momento/cache_client_async.py
index 36f0860f..4e27fc8c 100644
--- a/src/momento/cache_client_async.py
+++ b/src/momento/cache_client_async.py
@@ -8,7 +8,7 @@
 from momento.auth import CredentialProvider
 from momento.config import Configuration
 from momento.errors import UnknownException
-from momento.internal._utilities._data_validation import validate_eager_connection_timeout
+from momento.internal._utilities._data_validation import _validate_eager_connection_timeout
 from momento.requests import CollectionTtl, SortOrder
 from momento.utilities.shared_sync_asyncio import (
     DEFAULT_EAGER_CONNECTION_TIMEOUT_SECONDS,
@@ -207,7 +207,7 @@ async def create(
             eager_connection_timeout = timedelta(seconds=30)
             client = CacheClientAsync.create(configuration, credential_provider, ttl_seconds, eager_connection_timeout)
         """
-        validate_eager_connection_timeout(eager_connection_timeout)
+        _validate_eager_connection_timeout(eager_connection_timeout)
         # an explicit 0 means that the client disabled eager connections
         if eager_connection_timeout.total_seconds() != 0:
             client = CacheClientAsync(configuration, credential_provider, default_ttl)
diff --git a/src/momento/internal/_utilities/__init__.py b/src/momento/internal/_utilities/__init__.py
index 5f64b76c..7845d6f3 100644
--- a/src/momento/internal/_utilities/__init__.py
+++ b/src/momento/internal/_utilities/__init__.py
@@ -7,6 +7,8 @@
     _gen_set_input_as_bytes,
     _validate_cache_name,
     _validate_dictionary_name,
+    _validate_disposable_token_expiry,
+    _validate_eager_connection_timeout,
     _validate_list_name,
     _validate_request_timeout,
     _validate_set_name,
diff --git a/src/momento/internal/_utilities/_data_validation.py b/src/momento/internal/_utilities/_data_validation.py
index 2fcdedd3..2f2d7a7f 100644
--- a/src/momento/internal/_utilities/_data_validation.py
+++ b/src/momento/internal/_utilities/_data_validation.py
@@ -140,12 +140,12 @@ def _validate_request_timeout(request_timeout: Optional[timedelta]) -> None:
     _validate_timedelta_ttl(ttl=request_timeout, field_name="Request timeout")
 
 
-def validate_eager_connection_timeout(timeout: timedelta) -> None:
+def _validate_eager_connection_timeout(timeout: timedelta) -> None:
     if timeout.total_seconds() < 0:
         raise ValueError("The eager connection timeout must be greater than or equal to 0 seconds.")
 
 
-def validate_disposable_token_expiry(expires_in: ExpiresIn) -> None:
+def _validate_disposable_token_expiry(expires_in: ExpiresIn) -> None:
     if not expires_in.does_expire():
         raise ValueError("Disposable tokens must have an expiry")
     if expires_in.valid_for_seconds() < 0:
diff --git a/src/momento/internal/aio/_scs_token_client.py b/src/momento/internal/aio/_scs_token_client.py
index b1369442..4899db36 100644
--- a/src/momento/internal/aio/_scs_token_client.py
+++ b/src/momento/internal/aio/_scs_token_client.py
@@ -8,7 +8,7 @@
 from momento.auth.credential_provider import CredentialProvider
 from momento.config.auth_configuration import AuthConfiguration
 from momento.errors.error_converter import convert_error
-from momento.internal._utilities._data_validation import validate_disposable_token_expiry
+from momento.internal._utilities._data_validation import _validate_disposable_token_expiry
 from momento.internal._utilities._permissions import permissions_from_disposable_token_scope
 from momento.internal.aio._scs_grpc_manager import _TokenGrpcManager
 from momento.internal.services import Service
@@ -38,7 +38,7 @@ async def generate_disposable_token(
         disposable_token_props: Optional[DisposableTokenProps] = None,
     ) -> GenerateDisposableTokenResponse:
         try:
-            validate_disposable_token_expiry(expires_in)
+            _validate_disposable_token_expiry(expires_in)
             self._logger.info("Creating disposable token")
 
             token_id = disposable_token_props.token_id if disposable_token_props else None
diff --git a/src/momento/internal/synchronous/_scs_token_client.py b/src/momento/internal/synchronous/_scs_token_client.py
index 8a05fc71..b3876c62 100644
--- a/src/momento/internal/synchronous/_scs_token_client.py
+++ b/src/momento/internal/synchronous/_scs_token_client.py
@@ -8,7 +8,7 @@
 from momento.auth.credential_provider import CredentialProvider
 from momento.config.auth_configuration import AuthConfiguration
 from momento.errors.error_converter import convert_error
-from momento.internal._utilities._data_validation import validate_disposable_token_expiry
+from momento.internal._utilities._data_validation import _validate_disposable_token_expiry
 from momento.internal._utilities._permissions import permissions_from_disposable_token_scope
 from momento.internal.services import Service
 from momento.internal.synchronous._scs_grpc_manager import _TokenGrpcManager
@@ -38,7 +38,7 @@ def generate_disposable_token(
         disposable_token_props: Optional[DisposableTokenProps] = None,
     ) -> GenerateDisposableTokenResponse:
         try:
-            validate_disposable_token_expiry(expires_in)
+            _validate_disposable_token_expiry(expires_in)
             self._logger.info("Creating disposable token")
 
             token_id = disposable_token_props.token_id if disposable_token_props else None