diff --git a/examples/gallery/seismology/meca.py b/examples/gallery/seismology/meca.py
index 4a600b2d136..1866f1a79be 100644
--- a/examples/gallery/seismology/meca.py
+++ b/examples/gallery/seismology/meca.py
@@ -29,7 +29,7 @@
 
 # Store focal mechanism parameters in a dictionary based on the Aki & Richards
 # convention
-focal_mechanism = dict(strike=330, dip=30, rake=90, magnitude=3)
+focal_mechanism = {"strike": 330, "dip": 30, "rake": 90, "magnitude": 3}
 
 # Pass the focal mechanism data through the spec parameter. In addition provide
 # scale, event location, and event depth
diff --git a/pyproject.toml b/pyproject.toml
index c0579e3abb5..74b5aed7d1c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -102,6 +102,7 @@ select = [
     "A",    # flake8-builtins
     "B",    # flake8-bugbear
     "BLE",  # flake8-blind-except
+    "C4",   # flake8-comprehensions
     "E",    # pycodestyle
     "F",    # pyflakes
     "FA",   # flake8-future-annotations