diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 04fe74e..6ffb2eb 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,3 +18,8 @@ jobs:
         with:
           name: coverage-baseline
           path: artifacts/coverage-baseline.json
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v3
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          files: ./coverage/coverage-final.json
diff --git a/README.md b/README.md
index 7e490ba..301eaf9 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # TON Graph
 
+[![codecov](https://codecov.io/gh/PositiveSecurity/ton-graph/branch/main/graph/badge.svg)](https://codecov.io/gh/PositiveSecurity/ton-graph)
+
 A Visual Studio Code extension for visualizing function call graphs in TON smart contracts written in FunC, Tact, and Tolk.
 
 Developed by [PositiveWeb3](https://www.positive.com) security researchers.