diff --git a/Makefile b/Makefile
index b32ded8f..6e582059 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,6 @@ CONFIG = Debug
 
 DERIVED_DATA_PATH = ~/.derivedData/$(CONFIG)
 TEMP_COVERAGE_DIR := temp_coverage
-OUTPUT_FILE := coverage.info
 
 PLATFORM_IOS = iOS Simulator,id=$(call udid_for,iOS,iPhone \d\+ Pro [^M])
 PLATFORM_MACOS = macOS
diff --git a/README.md b/README.md
index 5792f3a8..4f12c401 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 # supabase-swift
 [![](https://img.shields.io/endpoint?url=https%3A%2F%2Fswiftpackageindex.com%2Fapi%2Fpackages%2Fsupabase%2Fsupabase-swift%2Fbadge%3Ftype%3Dswift-versions)](https://swiftpackageindex.com/supabase/supabase-swift)
 [![](https://img.shields.io/endpoint?url=https%3A%2F%2Fswiftpackageindex.com%2Fapi%2Fpackages%2Fsupabase%2Fsupabase-swift%2Fbadge%3Ftype%3Dplatforms)](https://swiftpackageindex.com/supabase/supabase-swift)
+[![Coverage Status](https://coveralls.io/repos/github/supabase/supabase-swift/badge.svg?branch=coveralls)](https://coveralls.io/github/supabase/supabase-swift?branch=coveralls)
 
 Supabase client for Swift. Mirrors the design of [supabase-js](https://github.com/supabase/supabase-js/blob/master/README.md).