diff --git a/.codecov.yml b/.codecov.yml
new file mode 100644
index 000000000..50934c736
--- /dev/null
+++ b/.codecov.yml
@@ -0,0 +1,15 @@
+coverage:
+  precision: 2      # Report coverage to 2 decimal places
+  round: down       # Round down
+  range: "90...100" # Anything below 90% is coloured red (considered bad)
+  status:           # Various customisations that it seems should be off
+    project: off
+    patch: off
+    changes: off
+
+comment:
+  layout: "header, diff, changes, tree"
+  behavior: default
+
+ignore:
+ - "extern"         # Do not check coverage on the extern directory