diff --git a/.github/workflows/check_json.yml b/.github/workflows/check_json.yml
new file mode 100644
index 0000000..e9f0463
--- /dev/null
+++ b/.github/workflows/check_json.yml
@@ -0,0 +1,25 @@
+name: Check JSON Validity
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+
+jobs:
+  validate-json:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Python3
+        uses: actions/setup-python@v5
+
+      - name: Validate JSON files
+        run: |
+          set -e
+          for file in $(find configs/ -type f -name "*.json"); do
+            echo "Checking $file"
+            python3 -m json.tool "$file" > /dev/null
+          done
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 2fbce93..4733356 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -5,7 +5,7 @@ on:
   push:
     branches:
       - master
-    tags: '*'
+    tags: ['*']
 
 jobs:
   test:
diff --git a/configs/conf.json b/configs/conf.json
index a35e778..2cc5167 100644
--- a/configs/conf.json
+++ b/configs/conf.json
@@ -226,9 +226,9 @@
     "library":"Chemical"
   },
   {
-    "library":"Chemical"
+    "library":"Chemical",
     "libraryVersion":"master",
-    "libraryVersionNameForTests":"master",
+    "libraryVersionNameForTests":"master"
   },
   {
     "library":"ClaRa",