diff --git a/.config/dictionaries/project.dic b/.config/dictionaries/project.dic
index 71af2719143..9580278cffa 100644
--- a/.config/dictionaries/project.dic
+++ b/.config/dictionaries/project.dic
@@ -24,6 +24,7 @@ bootstrapper
 BROTLI
 cantopen
 cardano
+carryforward
 CBOR
 cbork
 cdylib
@@ -39,6 +40,7 @@ ciphertexts
 codegen
 codepoints
 coti
+coverallsapp
 cpus
 crontabs
 crontagged
diff --git a/.github/workflows/generate-allure-report.yml b/.github/workflows/generate-allure-report.yml
index 3f221453e77..529b2df8a69 100644
--- a/.github/workflows/generate-allure-report.yml
+++ b/.github/workflows/generate-allure-report.yml
@@ -59,6 +59,15 @@ jobs:
           if-no-files-found: error
           retention-days: 1
 
+      - name: Collect and upload test coverage
+        uses: actions/upload-artifact@v4
+        if: always()
+        with:
+          name: coverage-reports
+          path: "**/*${{ env.COVERAGE_EXT }}"
+          if-no-files-found: error
+          retention-days: 1
+
   generate-allure-report:
     name: Generate allure report
     runs-on: ubuntu-latest
@@ -106,3 +115,49 @@ jobs:
             ${{ steps.allure.outputs.test_result_icon }} [Test Report](${{ steps.allure.outputs.report_url }}) | ${\color{lightgreen}Pass: ${{ steps.allure.outputs.test_result_passed }}/${{ steps.allure.outputs.test_result_total }}}$ | ${\color{red}Fail: ${{ steps.allure.outputs.test_result_failed }}/${{ steps.allure.outputs.test_result_total }}}$ |
           comment_tag: allure_report
           mode: upsert
+
+  generate-coverage-report:
+    name: Generate coverage report
+    runs-on: ubuntu-latest
+    needs: [generate-test-reports]
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/download-artifact@v4
+        with:
+          name: coverage-reports
+
+      - name: Collect coverage report
+        run: |
+          mkdir -p ${{ env.COVERAGE_REPORT_PATH }}
+          shopt -s globstar
+          cp **/*${{ env.COVERAGE_EXT }} ${{ env.COVERAGE_REPORT_PATH }}
+          ls ${{ env.COVERAGE_REPORT_PATH }}
+
+      - name: Normalize coverage report paths
+        run: |
+          sed -i -e 's/SF:\/root\/build/SF:rust/g' ${{ env.COVERAGE_REPORT_PATH }}/cat-libs.coverage.info
+
+      - name: Coveralls
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        uses: coverallsapp/github-action@v2
+        with:
+          path-to-lcov: "${{ env.COVERAGE_REPORT_PATH }}/cat-libs.coverage.info"
+          allow-empty: true
+          debug: true
+          flag-name: rust-unit-test
+          base-path: "/home/runner/work/catalyst-libs/catalyst-libs/"
+          parallel: true
+
+  upload-coverage-report:
+    name: Upload coverage report
+    needs: [generate-coverage-report]
+    if: ${{ always() }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Coveralls Finished
+        uses: coverallsapp/github-action@v2
+        with:
+          parallel-finished: true
+          carryforward: "rust-unit-test"
diff --git a/rust/Earthfile b/rust/Earthfile
index 2ba01a634c6..e7911ea50d0 100644
--- a/rust/Earthfile
+++ b/rust/Earthfile
@@ -55,8 +55,10 @@ build:
         --args2="--libs=cbork-cddl-parser --libs=cbork-abnf-parser" \
         --args3="--libs=catalyst-voting" \
         --args4="--bins=cbork/cbork" \
+        --args5="--cov_report=$HOME/build/coverage-report.info" \
         --output="release/[^\./]+" \
         --junit="cat-libs.junit-report.xml" \
+        --coverage="cat-libs.coverage.info" \
         --docs="true"
 
     SAVE ARTIFACT target/$TARGETARCH/doc doc