diff --git a/setup.py b/setup.py
index 0b67d50705..e7ffc87587 100644
--- a/setup.py
+++ b/setup.py
@@ -13,7 +13,7 @@
     python_requires=">=3.8",
     install_requires=[
         "prettytable>=0.7.2",
-        "pysha3>=1.0.2",
+        "pycryptodome>=3.4.6",
         "crytic-compile>=0.2.4",
         # "crytic-compile@git+https://github.com/crytic/crytic-compile.git@master#egg=crytic-compile",
     ],
diff --git a/slither/printers/summary/function_ids.py b/slither/printers/summary/function_ids.py
index 368a81382b..ca02dd7549 100644
--- a/slither/printers/summary/function_ids.py
+++ b/slither/printers/summary/function_ids.py
@@ -9,7 +9,7 @@
 class FunctionIds(AbstractPrinter):
 
     ARGUMENT = "function-id"
-    HELP = "Print the keccack256 signature of the functions"
+    HELP = "Print the keccak256 signature of the functions"
 
     WIKI = "https://github.com/trailofbits/slither/wiki/Printer-documentation#function-id"
 
diff --git a/slither/utils/function.py b/slither/utils/function.py
index b86d8f4ebc..34e6f221bb 100644
--- a/slither/utils/function.py
+++ b/slither/utils/function.py
@@ -1,4 +1,4 @@
-import sha3
+from Crypto.Hash import keccak
 
 
 def get_function_id(sig: str) -> int:
@@ -9,6 +9,6 @@ def get_function_id(sig: str) -> int:
     Return:
         (int)
     """
-    s = sha3.keccak_256()
-    s.update(sig.encode("utf-8"))
-    return int("0x" + s.hexdigest()[:8], 16)
+    digest = keccak.new(digest_bits=256)
+    digest.update(sig.encode("utf-8"))
+    return int("0x" + digest.hexdigest()[:8], 16)