diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 580a529cfd..561672a46c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -236,9 +236,15 @@ jobs:
           name: wasm-for-tests-${{ github.event.pull_request.head.sha|| github.sha }}
           path: wasm_for_tests
       - name: Test Wasm
-        run: cargo +${{ env.NIGHTLY }} nextest run --manifest-path wasm/Cargo.toml
+        # run: cargo +${{ env.NIGHTLY }} nextest run --manifest-path wasm/Cargo.toml
+        run: make test-wasm-with-coverage
         env:
           RUSTFLAGS: "-C linker=clang -C link-arg=-fuse-ld=/usr/local/bin/mold"
+      - name: Store coverage file artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: wasm-cov-${{ github.event.pull_request.head.sha || github.sha }}
+          path: wasm/lcov.info # output of `make test-wasm-with-coverage` 
       - name: Clean cargo cache
         if: steps.cache.outputs.cache-hit != 'true'
         run: cargo cache --autoclean-expensive
@@ -630,9 +636,14 @@ jobs:
         with:
           name: integration-cov-${{ github.event.pull_request.head.sha || github.sha }}
           path: integration-cov
+      - name: Download wasm coverage artifacts
+        uses: actions/download-artifact@v4
+        with:
+          name: wasm-cov-${{ github.event.pull_request.head.sha || github.sha }}
+          path: wasm-cov
       - name: Upload coverage to codecov
         uses: codecov/codecov-action@v4
         with:
-          files: integration-cov/lcov.info, unit-cov/lcov.info
+          files: integration-cov/lcov.info, unit-cov/lcov.info, wasm-cov/lcov.info
           fail_ci_if_error: true
           token: ${{ secrets.CODECOV_TOKEN }}
diff --git a/Makefile b/Makefile
index 3105c234f1..5b069e7e4f 100644
--- a/Makefile
+++ b/Makefile
@@ -212,6 +212,9 @@ test-integration-with-coverage:
 		--test-threads=1 \
 		-Z unstable-options --report-time
 
+test-wasm-with-coverage:
+	make -C $(wasms) test-with-coverage
+
 test-unit-mainnet:
 	$(cargo) +$(nightly) test --lib \
 		--features "mainnet" \
diff --git a/wasm/Makefile b/wasm/Makefile
index d4c5b0a52f..cdc55fb6ef 100644
--- a/wasm/Makefile
+++ b/wasm/Makefile
@@ -28,7 +28,7 @@ fmt-check:
 	$(cargo) +$(nightly) fmt --check
 
 test:
-	$(cargo) +$(nightly) test -- -Z unstable-options --report-time
+	$(cargo) +$(nightly) test --lib -- -Z unstable-options --report-time
 
 clean:
 	$(cargo) clean
@@ -36,4 +36,10 @@ clean:
 deps:
 	$(rustup) target add wasm32-unknown-unknown
 
+test-with-coverage:
+	$(cargo) +$(nightly) llvm-cov --lib --output-path lcov.info \
+		--lcov \
+		-- -Z unstable-options --report-time
+
+
 .PHONY: all debug check clippy clippy-fix fmt fmt-check test clean deps
\ No newline at end of file