diff --git a/.github/workflows/test-coverage.yaml b/.github/workflows/test-coverage.yaml
index 27d4528..0e6fc3b 100644
--- a/.github/workflows/test-coverage.yaml
+++ b/.github/workflows/test-coverage.yaml
@@ -13,9 +13,10 @@ jobs:
     runs-on: ubuntu-latest
     env:
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
+      CODCOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - uses: r-lib/actions/setup-r@v2
         with:
@@ -44,7 +45,7 @@ jobs:
 
       - name: Upload test results
         if: failure()
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: coverage-test-failures
           path: ${{ runner.temp }}/package
diff --git a/README.md b/README.md
index 80cbead..8ada695 100644
--- a/README.md
+++ b/README.md
@@ -14,5 +14,7 @@ This package is under construction. Though we are fairly confident that implemen
 ```r
 # install.packages("devtools")
 devtools::install_github("AngusMcLure/PoolPoweR")
-```
+```  
 
+## Citation  
+> McLure, A., & Jaya, F. PoolPoweR [Computer software]. https://github.com/AngusMcLure/PoolPoweR