diff --git a/.github/workflows/test-coverage.yaml b/.github/workflows/test-coverage.yaml
index 8553846..37b77e9 100644
--- a/.github/workflows/test-coverage.yaml
+++ b/.github/workflows/test-coverage.yaml
@@ -45,6 +45,22 @@ jobs:
           remotes::install_deps(dependencies = TRUE)
         shell: Rscript {0}
 
+      - name: Check for missing packages
+        run: |
+          missing_pkgs <- setdiff(c("covr", "testthat"), rownames(installed.packages()))
+          if (length(missing_pkgs) > 0) {
+            cat("Missing packages:", paste(missing_pkgs, collapse = ", "), "\n")
+            install.packages(missing_pkgs)
+          } else {
+            cat("All required packages are installed.\n")
+          }
+        shell: Rscript {0}
+
+      - name: Run tests
+        run: |
+          testthat::test_local()
+        shell: Rscript {0}
+
       - name: Test coverage
         run: covr::codecov()
         shell: Rscript {0}