diff --git a/CHANGES.txt b/CHANGES.txt
index f9894e0..a249429 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -4,6 +4,7 @@ Next Release
 Internal changes
 -----------------
 - Move `get_template` into `helpers.files` (PR #125)
+- CI fix: Omit netCDF4 file from coverage runs (PR #128)
 
 
 ScriptEngine Tasks for EC-Earth 0.10.1
diff --git a/pyproject.toml b/pyproject.toml
index 3a8e1ce..a892054 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -58,3 +58,8 @@
         "ece.mon.presentation.redmine" = "monitoring.redmine:Redmine"
         "ece.mon.presentation.gitlab" = "monitoring.gitlab:Gitlab"
         "ece.mon.linear_combination" = "monitoring.linear_combination:LinearCombination"
+
+[tool.coverage.run]
+omit = [
+    "src/netCDF4/_netCDF4.pyx",
+]