diff --git a/pygmt/src/select.py b/pygmt/src/select.py
index a266fc62163..ca3267a2c2e 100644
--- a/pygmt/src/select.py
+++ b/pygmt/src/select.py
@@ -12,7 +12,6 @@
 from pygmt.clib import Session
 from pygmt.helpers import (
     build_arg_list,
-    deprecate_parameter,
     fmt_docstring,
     kwargs_to_strings,
     use_alias,
@@ -23,10 +22,6 @@
 
 
 @fmt_docstring
-# TODO(PyGMT>=0.20.0): Remove the deprecated 'mask' parameter.
-# TODO(PyGMT>=0.20.0): Remove the deprecated 'gridmask' parameter.
-@deprecate_parameter("mask", "mask_values", "v0.18.0", remove_version="v0.20.0")
-@deprecate_parameter("gridmask", "mask_grid", "v0.18.0", remove_version="v0.20.0")
 @use_alias(
     A="area_thresh",
     C="dist2pt",