diff --git a/examples/flax/language-modeling/run_bart_dlm_flax.py b/examples/flax/language-modeling/run_bart_dlm_flax.py
index cce2253e9ae2..d1928dd73130 100644
--- a/examples/flax/language-modeling/run_bart_dlm_flax.py
+++ b/examples/flax/language-modeling/run_bart_dlm_flax.py
@@ -531,6 +531,7 @@ def main():
             data_args.dataset_config_name,
             cache_dir=model_args.cache_dir,
             token=model_args.token,
+            num_proc=data_args.preprocessing_num_workers,
         )
 
         if "validation" not in datasets.keys():
@@ -540,6 +541,7 @@ def main():
                 split=f"train[:{data_args.validation_split_percentage}%]",
                 cache_dir=model_args.cache_dir,
                 token=model_args.token,
+                num_proc=data_args.preprocessing_num_workers,
             )
             datasets["train"] = load_dataset(
                 data_args.dataset_name,
@@ -547,6 +549,7 @@ def main():
                 split=f"train[{data_args.validation_split_percentage}%:]",
                 cache_dir=model_args.cache_dir,
                 token=model_args.token,
+                num_proc=data_args.preprocessing_num_workers,
             )
     else:
         data_files = {}
@@ -562,6 +565,7 @@ def main():
             data_files=data_files,
             cache_dir=model_args.cache_dir,
             token=model_args.token,
+            num_proc=data_args.preprocessing_num_workers,
         )
 
         if "validation" not in datasets.keys():
@@ -571,6 +575,7 @@ def main():
                 split=f"train[:{data_args.validation_split_percentage}%]",
                 cache_dir=model_args.cache_dir,
                 token=model_args.token,
+                num_proc=data_args.preprocessing_num_workers,
             )
             datasets["train"] = load_dataset(
                 extension,
@@ -578,6 +583,7 @@ def main():
                 split=f"train[{data_args.validation_split_percentage}%:]",
                 cache_dir=model_args.cache_dir,
                 token=model_args.token,
+                num_proc=data_args.preprocessing_num_workers,
             )
     # See more about loading any type of standard or custom dataset (from files, python dict, pandas DataFrame, etc) at
     # https://huggingface.co/docs/datasets/loading_datasets.html.
diff --git a/examples/flax/language-modeling/run_clm_flax.py b/examples/flax/language-modeling/run_clm_flax.py
index b740dfcffe12..95e175d494bf 100755
--- a/examples/flax/language-modeling/run_clm_flax.py
+++ b/examples/flax/language-modeling/run_clm_flax.py
@@ -421,6 +421,7 @@ def main():
             cache_dir=model_args.cache_dir,
             keep_in_memory=False,
             token=model_args.token,
+            num_proc=data_args.preprocessing_num_workers,
         )
 
         if "validation" not in dataset.keys():
@@ -430,6 +431,7 @@ def main():
                 split=f"train[:{data_args.validation_split_percentage}%]",
                 cache_dir=model_args.cache_dir,
                 token=model_args.token,
+                num_proc=data_args.preprocessing_num_workers,
             )
             dataset["train"] = load_dataset(
                 data_args.dataset_name,
@@ -437,6 +439,7 @@ def main():
                 split=f"train[{data_args.validation_split_percentage}%:]",
                 cache_dir=model_args.cache_dir,
                 token=model_args.token,
+                num_proc=data_args.preprocessing_num_workers,
             )
     else:
         data_files = {}
@@ -455,6 +458,7 @@ def main():
             cache_dir=model_args.cache_dir,
             **dataset_args,
             token=model_args.token,
+            num_proc=data_args.preprocessing_num_workers,
         )
 
         if "validation" not in dataset.keys():
@@ -465,6 +469,7 @@ def main():
                 cache_dir=model_args.cache_dir,
                 **dataset_args,
                 token=model_args.token,
+                num_proc=data_args.preprocessing_num_workers,
             )
             dataset["train"] = load_dataset(
                 extension,
@@ -473,6 +478,7 @@ def main():
                 cache_dir=model_args.cache_dir,
                 **dataset_args,
                 token=model_args.token,
+                num_proc=data_args.preprocessing_num_workers,
             )
     # See more about loading any type of standard or custom dataset (from files, python dict, pandas DataFrame, etc) at
     # https://huggingface.co/docs/datasets/loading_datasets.html.
diff --git a/examples/flax/language-modeling/run_mlm_flax.py b/examples/flax/language-modeling/run_mlm_flax.py
index 91d5c1c21b02..00c1bb32d099 100755
--- a/examples/flax/language-modeling/run_mlm_flax.py
+++ b/examples/flax/language-modeling/run_mlm_flax.py
@@ -458,6 +458,7 @@ def main():
             data_args.dataset_config_name,
             cache_dir=model_args.cache_dir,
             token=model_args.token,
+            num_proc=data_args.preprocessing_num_workers,
         )
 
         if "validation" not in datasets.keys():
@@ -467,6 +468,7 @@ def main():
                 split=f"train[:{data_args.validation_split_percentage}%]",
                 cache_dir=model_args.cache_dir,
                 token=model_args.token,
+                num_proc=data_args.preprocessing_num_workers,
             )
             datasets["train"] = load_dataset(
                 data_args.dataset_name,
@@ -474,6 +476,7 @@ def main():
                 split=f"train[{data_args.validation_split_percentage}%:]",
                 cache_dir=model_args.cache_dir,
                 token=model_args.token,
+                num_proc=data_args.preprocessing_num_workers,
             )
     else:
         data_files = {}
@@ -489,6 +492,7 @@ def main():
             data_files=data_files,
             cache_dir=model_args.cache_dir,
             token=model_args.token,
+            num_proc=data_args.preprocessing_num_workers,
         )
 
         if "validation" not in datasets.keys():
@@ -498,6 +502,7 @@ def main():
                 split=f"train[:{data_args.validation_split_percentage}%]",
                 cache_dir=model_args.cache_dir,
                 token=model_args.token,
+                num_proc=data_args.preprocessing_num_workers,
             )
             datasets["train"] = load_dataset(
                 extension,
@@ -505,6 +510,7 @@ def main():
                 split=f"train[{data_args.validation_split_percentage}%:]",
                 cache_dir=model_args.cache_dir,
                 token=model_args.token,
+                num_proc=data_args.preprocessing_num_workers,
             )
     # See more about loading any type of standard or custom dataset (from files, python dict, pandas DataFrame, etc) at
     # https://huggingface.co/docs/datasets/loading_datasets.html.
diff --git a/examples/flax/language-modeling/run_t5_mlm_flax.py b/examples/flax/language-modeling/run_t5_mlm_flax.py
index 2d4f51474eb3..a4641dc21526 100755
--- a/examples/flax/language-modeling/run_t5_mlm_flax.py
+++ b/examples/flax/language-modeling/run_t5_mlm_flax.py
@@ -572,6 +572,7 @@ def main():
             data_args.dataset_config_name,
             cache_dir=model_args.cache_dir,
             token=model_args.token,
+            num_proc=data_args.preprocessing_num_workers,
         )
 
         if "validation" not in datasets.keys():
@@ -581,6 +582,7 @@ def main():
                 split=f"train[:{data_args.validation_split_percentage}%]",
                 cache_dir=model_args.cache_dir,
                 token=model_args.token,
+                num_proc=data_args.preprocessing_num_workers,
             )
             datasets["train"] = load_dataset(
                 data_args.dataset_name,
@@ -588,6 +590,7 @@ def main():
                 split=f"train[{data_args.validation_split_percentage}%:]",
                 cache_dir=model_args.cache_dir,
                 token=model_args.token,
+                num_proc=data_args.preprocessing_num_workers,
             )
     else:
         data_files = {}
@@ -603,6 +606,7 @@ def main():
             data_files=data_files,
             cache_dir=model_args.cache_dir,
             token=model_args.token,
+            num_proc=data_args.preprocessing_num_workers,
         )
 
         if "validation" not in datasets.keys():
@@ -612,6 +616,7 @@ def main():
                 split=f"train[:{data_args.validation_split_percentage}%]",
                 cache_dir=model_args.cache_dir,
                 token=model_args.token,
+                num_proc=data_args.preprocessing_num_workers,
             )
             datasets["train"] = load_dataset(
                 extension,
@@ -619,6 +624,7 @@ def main():
                 split=f"train[{data_args.validation_split_percentage}%:]",
                 cache_dir=model_args.cache_dir,
                 token=model_args.token,
+                num_proc=data_args.preprocessing_num_workers,
             )
     # See more about loading any type of standard or custom dataset (from files, python dict, pandas DataFrame, etc) at
     # https://huggingface.co/docs/datasets/loading_datasets.html.