diff --git a/.github/workflows/pr-build-test.yaml b/.github/workflows/pr-build-test.yaml
index aa7d273..3a49ac3 100644
--- a/.github/workflows/pr-build-test.yaml
+++ b/.github/workflows/pr-build-test.yaml
@@ -112,6 +112,19 @@ jobs:
             -   name: Lint
                 run: npm run lint
 
+            -   name: Input Schema Validation
+                run: |
+                    if [ ! -d "node_modules/apify-cli" ]; then
+                        echo "::warning::apify-cli is not installed as an npm dependency. Improve CI speed by installing it"
+                    fi
+                    npx --yes apify-cli telemetry disable
+                    if [ -d ./.actor ]; then
+                        npx apify-cli validate-schema
+                    fi
+                    if [ -d ./actors ]; then
+                        cd ./actors && ls | xargs -P 8 -I {} sh -c 'cd {} && npx apify-cli validate-schema || { echo "::error::Schema validation failed in actor: {}"; exit 1; }'
+                    fi
+
             -   name: Test
                 run: npm test