diff --git a/keras_hub/src/tokenizers/sentence_piece_tokenizer_trainer.py b/keras_hub/src/tokenizers/sentence_piece_tokenizer_trainer.py
index 005b067532..7c5197d093 100644
--- a/keras_hub/src/tokenizers/sentence_piece_tokenizer_trainer.py
+++ b/keras_hub/src/tokenizers/sentence_piece_tokenizer_trainer.py
@@ -1,5 +1,7 @@
 import io
 
+from keras_hub.src.utils.tensor_utils import assert_tf_libs_installed
+
 try:
     import sentencepiece as spm
     import tensorflow as tf
@@ -77,6 +79,7 @@ def compute_sentence_piece_proto(
     tf.Tensor([ 4  8 12  5  9 14  5  6 13  4  7 10 11  6 13],
     shape=(15,), dtype=int32)
     """
+    assert_tf_libs_installed("compute_sentence_piece_proto")
 
     if spm is None:
         raise ImportError(
diff --git a/keras_hub/src/tokenizers/word_piece_tokenizer_trainer.py b/keras_hub/src/tokenizers/word_piece_tokenizer_trainer.py
index 05e00eec95..3ba7fc4071 100644
--- a/keras_hub/src/tokenizers/word_piece_tokenizer_trainer.py
+++ b/keras_hub/src/tokenizers/word_piece_tokenizer_trainer.py
@@ -1,5 +1,6 @@
 from keras_hub.src.api_export import keras_hub_export
 from keras_hub.src.tokenizers.word_piece_tokenizer import pretokenize
+from keras_hub.src.utils.tensor_utils import assert_tf_libs_installed
 
 try:
     import tensorflow as tf
@@ -117,6 +118,8 @@ def normalize_and_split(x):
     inputs.map(tokenizer.tokenize)
     ```
     """  # noqa: E501
+    assert_tf_libs_installed("compute_word_piece_vocabulary")
+
     # Read data files.
     if not isinstance(data, (list, tf.data.Dataset)):
         raise ValueError(