diff --git a/merkly/utils.py b/merkly/utils.py
index 4506e01..7beee1d 100644
--- a/merkly/utils.py
+++ b/merkly/utils.py
@@ -3,7 +3,7 @@
 """
 
 from typing import Callable, List, Tuple
-from sha3 import keccak_256
+from Crypto.Hash import keccak as cryptodome_keccak
 import types
 
 
@@ -43,7 +43,11 @@ def keccak(data: str) -> str:
     "541111248b45b7a8dc3f5579f630e74cb01456ea6ac067d3f4d793245a255155"
     ```
     """
-    return keccak_256(data.encode()).hexdigest()
+
+    keccak_256 = cryptodome_keccak.new(digest_bits=256)
+    keccak_256.update(data.encode())
+
+    return keccak_256.hexdigest()
 
 
 def half(list_item: List[int]) -> Tuple[int, int]:
diff --git a/pyproject.toml b/pyproject.toml
index 3a5719d..b7e9649 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,14 +16,14 @@ keywords = [
 ]
 
 [tool.poetry.dependencies]
-    python = "^3.8"
-    pysha3 = "^1.0.2"
+    pycryptodome = "^3.19.0"
     pydantic = "^1.10.2"
-    coverage = "^7.2.7"
+    python = "^3.8"
 
 [tool.poetry.dev-dependencies]
     conventional-pre-commit = "^2.1.1"
     pre-commit = "^3.0.3"
+    coverage = "^7.2.7"
     pyclean = "^2.2.0"
     pytest = "^7.2.1"
     black = "^23.1.0"