diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 57d5fe5..660d925 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -72,6 +72,11 @@ jobs:
       - name: Check the test coverage is above the minimum criteria
         run: sbt +coverageReport
 
+      - name: Upload coverage data to Coveralls
+        run: sbt coverageAggregate coveralls
+        env:
+          COVERALLS_REPO_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
         # https://www.scala-sbt.org/1.x/docs/GitHub-Actions-with-sbt.html#Caching
       - name: Clean files for caching
         run: |
diff --git a/README.md b/README.md
index d001210..d77fa27 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # lerna-app-library
 
+[![Coverage Status](https://coveralls.io/repos/github/lerna-stack/lerna-app-library/badge.svg?branch=main)](https://coveralls.io/github/lerna-stack/lerna-app-library?branch=main)
+
 A library that is useful for building applications that run on Lerna Stack.
 
 ## Modules
diff --git a/project/plugins.sbt b/project/plugins.sbt
index 00ef695..21ef204 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -8,6 +8,8 @@ addSbtPlugin("org.wartremover" % "sbt-wartremover-contrib" % "1.3.1")
 
 addSbtPlugin("org.scoverage" % "sbt-scoverage" % "1.8.1")
 
+addSbtPlugin("org.scoverage" % "sbt-coveralls" % "1.3.1")
+
 // ScalaPB
 addSbtPlugin("com.thesamet"                    % "sbt-protoc"     % "1.0.2")
 libraryDependencies += "com.thesamet.scalapb" %% "compilerplugin" % "0.11.3"