diff --git a/examples/pylink-rtt b/examples/pylink-rtt
index dde7d48..14bbb72 100755
--- a/examples/pylink-rtt
+++ b/examples/pylink-rtt
@@ -28,7 +28,6 @@ import pylink
 import argparse
 import sys
 import time
-from six.moves import input
 
 try:
     import thread
diff --git a/pylink/__main__.py b/pylink/__main__.py
index 0ba5b09..4515a0b 100644
--- a/pylink/__main__.py
+++ b/pylink/__main__.py
@@ -18,10 +18,6 @@
 import logging
 import os
 import sys
-try:
-    from six.moves import with_metaclass
-except (AttributeError, ImportError):
-    from six import with_metaclass
 
 
 class CommandMeta(type):
@@ -52,7 +48,7 @@ def __new__(cls, name, parents, dct):
         return newClass
 
 
-class Command(with_metaclass(CommandMeta)):
+class Command(metaclass=CommandMeta):
     """Base command-class.
 
     All commands should inherit from this class.
diff --git a/pylink/jlink.py b/pylink/jlink.py
index 99451a5..869d7ba 100644
--- a/pylink/jlink.py
+++ b/pylink/jlink.py
@@ -32,7 +32,6 @@
 import os
 import sys
 import time
-import six
 
 
 logger = logging.getLogger(__name__)
@@ -429,7 +428,7 @@ def _get_register_index_from_name(self, register):
           ``int``
         """
         regs = list(self.register_name(idx) for idx in self.register_list())
-        if isinstance(register, six.string_types):
+        if isinstance(register, str):
             try:
                 result = regs.index(register)
             except ValueError:
@@ -3480,7 +3479,7 @@ def register_read(self, register_index):
           The value stored in the given register.
         """
         # TODO: rename 'register_index' to 'register'
-        if isinstance(register_index, six.string_types):
+        if isinstance(register_index, str):
             register_index = self._get_register_index_from_name(register_index)
         return self._dll.JLINKARM_ReadReg(register_index)
 
@@ -3504,7 +3503,7 @@ def register_read_multiple(self, register_indices):
         register_indices = register_indices[:]
         num_regs = len(register_indices)
         for idx, indice in enumerate(register_indices):
-            if isinstance(indice, six.string_types):
+            if isinstance(indice, str):
                 register_indices[idx] = self._get_register_index_from_name(indice)
         buf = (ctypes.c_uint32 * num_regs)(*register_indices)
         data = (ctypes.c_uint32 * num_regs)(0)
@@ -3539,7 +3538,7 @@ def register_write(self, reg_index, value):
           JLinkException: on write error.
         """
         # TODO: rename 'reg_index' to 'register'
-        if isinstance(reg_index, six.string_types):
+        if isinstance(reg_index, str):
             reg_index = self._get_register_index_from_name(reg_index)
         res = self._dll.JLINKARM_WriteReg(reg_index, value)
         if res != 0:
@@ -3573,7 +3572,7 @@ def register_write_multiple(self, register_indices, values):
 
         num_regs = len(register_indices)
         for idx, indice in enumerate(register_indices):
-            if isinstance(indice, six.string_types):
+            if isinstance(indice, str):
                 register_indices[idx] = self._get_register_index_from_name(indice)
         buf = (ctypes.c_uint32 * num_regs)(*register_indices)
         data = (ctypes.c_uint32 * num_regs)(*values)
diff --git a/setup.cfg b/setup.cfg
index 31cf841..f2b28c2 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -22,7 +22,6 @@ summary = True
     psutil>=5.2.2
     pycodestyle>=2.3.1
     setuptools>=70.2.0
-    six
     sphinx==1.4.8
     sphinx-argparse==0.1.15
     sphinx_rtd_theme==0.2.4
diff --git a/setup.py b/setup.py
index eb51a52..0ac662e 100644
--- a/setup.py
+++ b/setup.py
@@ -21,11 +21,6 @@
 except ImportError:
     sys.modules['psutil'] = {}
 
-try:
-    import six
-except ImportError:
-    sys.modules['six'] = {}
-
 import pylink
 
 import os
@@ -261,7 +256,6 @@ def long_description():
     # Dependencies.
     install_requires=[
         'psutil >= 5.2.2',
-        'six'
     ],
 
     # Tests