diff --git a/.gitignore b/.gitignore
index 37e981426..b726b15e7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,6 +14,9 @@ lib-cov
 # Coverage directory used by tools like istanbul
 coverage
 
+# coverage output
+coverage.lcov
+
 # nyc test coverage
 .nyc_output
 
diff --git a/.npmignore b/.npmignore
index dfe6586dc..08e9fdf23 100644
--- a/.npmignore
+++ b/.npmignore
@@ -14,6 +14,9 @@ lib-cov
 # Coverage directory used by tools like istanbul
 coverage
 
+# coverage output
+coverage.lcov
+
 # nyc test coverage
 .nyc_output