diff --git a/ci/linting_requirements.txt b/ci/linting_requirements.txt
index 1b8690c4f73..5b11d51cd8a 100644
--- a/ci/linting_requirements.txt
+++ b/ci/linting_requirements.txt
@@ -1,5 +1,5 @@
 flake8==3.7.9
-pycodestyle==2.5.0
+pycodestyle==2.6.0
 pyflakes==2.2.0
 
 flake8-bugbear==20.1.4
diff --git a/examples/meteogram_metpy.py b/examples/meteogram_metpy.py
index 844209136f7..5fdddfb5840 100644
--- a/examples/meteogram_metpy.py
+++ b/examples/meteogram_metpy.py
@@ -80,10 +80,10 @@ def plot_winds(self, ws, wd, wsmax, plot_range=None):
         ax7.set_ylabel('Wind\nDirection\n(degrees)', multialignment='center')
         ax7.set_ylim(0, 360)
         ax7.set_yticks(np.arange(45, 405, 90), ['NE', 'SE', 'SW', 'NW'])
-        lns = ln1 + ln2 + ln3
-        labs = [l.get_label() for l in lns]
+        lines = ln1 + ln2 + ln3
+        labs = [line.get_label() for line in lines]
         ax7.xaxis.set_major_formatter(mpl.dates.DateFormatter('%d/%H UTC'))
-        ax7.legend(lns, labs, loc='upper center',
+        ax7.legend(lines, labs, loc='upper center',
                    bbox_to_anchor=(0.5, 1.2), ncol=3, prop={'size': 12})
 
     def plot_thermo(self, t, td, plot_range=None):
@@ -111,11 +111,11 @@ def plot_thermo(self, t, td, plot_range=None):
 
         ax_twin = self.ax2.twinx()
         ax_twin.set_ylim(plot_range[0], plot_range[1], plot_range[2])
-        lns = ln4 + ln5
-        labs = [l.get_label() for l in lns]
+        lines = ln4 + ln5
+        labs = [line.get_label() for line in lines]
         ax_twin.xaxis.set_major_formatter(mpl.dates.DateFormatter('%d/%H UTC'))
 
-        self.ax2.legend(lns, labs, loc='upper center',
+        self.ax2.legend(lines, labs, loc='upper center',
                         bbox_to_anchor=(0.5, 1.2), ncol=2, prop={'size': 12})
 
     def plot_rh(self, rh, plot_range=None):
diff --git a/src/metpy/plots/wx_symbols.py b/src/metpy/plots/wx_symbols.py
index 8808c6182ff..39134409be0 100644
--- a/src/metpy/plots/wx_symbols.py
+++ b/src/metpy/plots/wx_symbols.py
@@ -106,13 +106,13 @@ def __init__(self, num, font_start, font_jumps=None, char_jumps=None):
                 font_point += 1
 
     @staticmethod
-    def _safe_pop(l):
+    def _safe_pop(lst):
         """Safely pop from a list.
 
         Returns None if list empty.
 
         """
-        return l.pop(0) if l else None
+        return lst.pop(0) if lst else None
 
     def __call__(self, code):
         """Return the Unicode code point corresponding to `code`."""