diff --git a/transforms/README-list.md b/transforms/README-list.md
index 8e55d1df5..08d4e76c8 100644
--- a/transforms/README-list.md
+++ b/transforms/README-list.md
@@ -45,6 +45,7 @@ Note: This list includes the transforms that were part of the release starting w
 
 ### 1.0.1.dev1
 	Added Gneissweb transforms
+	fdedup fix for windows
 ### 1.0.1.dev0
 	PR #979 (code_profiler)
 ### 1.0.0.a6
diff --git a/transforms/requirements-ray.txt b/transforms/requirements-ray.txt
index 517d039d4..225a73b7e 100644
--- a/transforms/requirements-ray.txt
+++ b/transforms/requirements-ray.txt
@@ -1,4 +1,4 @@
-data-prep-toolkit[ray]>=0.2.3
+data-prep-toolkit[ray]>=0.2.4.dev0
 networkx==3.3
 colorlog==6.8.2
 func-timeout==4.3.5
diff --git a/transforms/universal/fdedup/dpk_fdedup/cluster_analysis/transform.py b/transforms/universal/fdedup/dpk_fdedup/cluster_analysis/transform.py
index b414adaa6..06c02f553 100644
--- a/transforms/universal/fdedup/dpk_fdedup/cluster_analysis/transform.py
+++ b/transforms/universal/fdedup/dpk_fdedup/cluster_analysis/transform.py
@@ -130,7 +130,14 @@ def transform(self, folder_name: str) -> tuple[list[tuple[bytes, str]], dict[str
             band = int(match.group(1))
             segment = int(match.group(2))
         else:
-            raise ValueError(f"Wrong folder_name {folder_name}, should be band=b/segment=s")
+            match = re.match(r"^band=(\d+)\\segment=(\d+)$", folder_name)
+            if match:
+                band = int(match.group(1))
+                segment = int(match.group(2))
+            else:
+                raise ValueError(
+                    f"Wrong folder_name {folder_name}, should be either band=b/segment=s or band=b\\segment=s (windows)"
+                )
         output_folder = TransformUtils.clean_path(self.data_access.output_folder)
         output_path = os.path.join(output_folder, f"band_{band}_segment_{segment}.parquet")
 
diff --git a/transforms/universal/fdedup/dpk_fdedup/signature_calc/transform.py b/transforms/universal/fdedup/dpk_fdedup/signature_calc/transform.py
index d01ee7b85..50630bd80 100644
--- a/transforms/universal/fdedup/dpk_fdedup/signature_calc/transform.py
+++ b/transforms/universal/fdedup/dpk_fdedup/signature_calc/transform.py
@@ -394,7 +394,7 @@ def _emit_bands(self, int_id_column: str, minhashes: np.array, b: int, r: int, s
         results = []
         for band_index in range(b):
             band_hash, _ = mmh3.hash64(
-                minhashes[band_index * r : (band_index + 1) * r],
+                minhashes[band_index * r : (band_index + 1) * r].tobytes(),
                 seed=seed,
                 signed=False,
             )
diff --git a/transforms/universal/fdedup/requirements.txt b/transforms/universal/fdedup/requirements.txt
index 42af99d8b..ee84fb6eb 100644
--- a/transforms/universal/fdedup/requirements.txt
+++ b/transforms/universal/fdedup/requirements.txt
@@ -1,9 +1,9 @@
 pyyaml>=6.0.2
 boto3>=1.34.69
 kubernetes>=30.1.0
-polars==1.9.0
+polars>=1.9.0, !=1.10.0, !=1.11.0, !=1.12.0
 disjoint-set>=0.8.0
 scipy>=1.12.1, <2.0.0
 numpy<1.29.0
 sentencepiece>=0.2.0
-mmh3>=4.1.0, <=5.0.1
+mmh3>=4.1.0