diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 69a4049ed..27fff581e 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -46,6 +46,7 @@ jobs:
           sudo apt update
           sudo apt-get install -y autoconf
           sudo apt-get install -y automake
+          sudo apt-get install -y lcov
           sudo apt-get install -y mpich
           sudo apt-get install -y zlib1g-dev 
           sudo apt-get install -y libsdl2-dev
@@ -55,4 +56,14 @@ jobs:
         run: ci/install_deps.sh
           
       - name: Build and Test
-        run: ci/install_hermes.sh
+        run: |
+          ci/install_hermes.sh
+          mkdir -p "${GITHUB_WORKSPACE}/coverage"
+          pushd build/src/CMakeFiles/hermes.dir
+          gcov -r buffer_pool.cc.gcno
+          lcov -c -d . -o "${GITHUB_WORKSPACE}/coverage/lcov.info"
+
+      - name: Coveralls
+        uses: coverallsapp/github-action@master
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0c2ebccfb..edad041f6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -170,7 +170,7 @@ mark_as_advanced(HERMES_DEBUG_HEAP)
 
 if (CMAKE_BUILD_TYPE STREQUAL "Debug")
   if (NOT "${CMAKE_CXX_FLAGS_DEBUG}" MATCHES ".*-g3.*")
-    set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -g3"
+    set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -g3 -fprofile-arcs -ftest-coverage "
         CACHE STRING "" FORCE)
   endif()
 
diff --git a/README.md b/README.md
index 7efc17bf3..2cd902f2e 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,8 @@ Hermes is a heterogeneous aware, multi-tiered, dynamic, and distributed I/O buff
 
 ![Build](https://github.com/HDFGroup/hermes/workflows/GitHub%20Actions/badge.svg)
 
+[![Coverage Status](https://coveralls.io/repos/github/HDFGroup/hermes/badge.svg?branch=master)](https://coveralls.io/github/HDFGroup/hermes?branch=master)
+
 ## Dependencies
 * A C++ compiler that supports C++ 17.
 * [Thallium](https://mochi.readthedocs.io/en/latest/installing.html) - RPC library for HPC. Use a version greater than `0.5` for RoCE support.