diff --git a/redpic/constants/__init__.py b/redpic/constants/__init__.py
index 1051f06..4566d79 100644
--- a/redpic/constants/__init__.py
+++ b/redpic/constants/__init__.py
@@ -1,7 +1,6 @@
 from collections import namedtuple
 
 import numpy as np
-import periodictable
 from scipy import constants as scipy_constants
 
 __all__ = [
@@ -64,7 +63,3 @@
 proton = Element(name="proton", symbol="p", mass=m_p, charge=e)
 antiproton = Element(name="antiproton", symbol="p-", mass=m_p, charge=-e)
 Particle = Element
-
-# Get mass of each element from periodictable
-elements = periodictable.core.default_table()
-__all__ += periodictable.core.define_elements(elements, globals())
diff --git a/requirements/base.txt b/requirements/base.txt
index 976124b..d88d1bf 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -2,6 +2,5 @@ kenv>=0.3.0.3
 numba>=0.59.1
 numpy>=1.26.0
 pandas>=2.0.3
-periodictable>=1.6.1
 scipy>=1.11.2
 setuptools>=65.5.1
\ No newline at end of file