diff --git a/quality-tools/gcov.json b/quality-tools/gcov.json
index 238925f0..e7d92262 100644
--- a/quality-tools/gcov.json
+++ b/quality-tools/gcov.json
@@ -19,5 +19,11 @@
     { "@id": "dim:sustainability", "@type": "@id" }
   ],
   "howToUse": ["CI/CD", "command-line"],
-  "license": "https://choosealicense.com/licenses/gpl-2.0/"
+  "license": "https://spdx.org/licenses/GPL-2.0-only.html",
+  "measuresQualityIndicator": [
+    {
+      "@id": "https://w3id.org/everse/i/indicators/software_has_tests",
+      "@type": "@id"
+    }
+  ]
 }
diff --git a/quality-tools/javadoc.json b/quality-tools/javadoc.json
index d6e5e367..7e5ac53a 100644
--- a/quality-tools/javadoc.json
+++ b/quality-tools/javadoc.json
@@ -16,5 +16,15 @@
   "isAccessibleForFree": true,
   "license": "https://www.oracle.com/downloads/licenses/no-fee-license",
   "name": "javadoc",
-  "url": "https://www.oracle.com/java/technologies/javase/javadoc-tool.html"
+  "url": "https://www.oracle.com/java/technologies/javase/javadoc-tool.html",
+  "improvesQualityIndicator": [
+    {
+      "@id": "https://w3id.org/everse/i/indicators/software_has_documentation",
+      "@type": "@id"
+    },
+    {
+      "@id": "https://w3id.org/everse/i/indicators/descriptive_metadata",
+      "@type": "@id"
+    }
+  ]
 }
diff --git a/quality-tools/jenkins.json b/quality-tools/jenkins.json
index 2ef6519e..ae352f05 100644
--- a/quality-tools/jenkins.json
+++ b/quality-tools/jenkins.json
@@ -15,5 +15,19 @@
   "isAccessibleForFree": true,
   "license": "https://spdx.org/licenses/MIT",
   "name": "Jenkins",
-  "url": "https://www.jenkins.io/"
+  "url": "https://www.jenkins.io/",
+  "improvesQualityIndicator": [
+    {
+      "@id": "https://w3id.org/everse/i/indicators/repository_workflows",
+      "@type": "@id"
+    },
+    {
+      "@id": "https://w3id.org/everse/i/indicators/has_ci-tests",
+      "@type": "@id"
+    },
+    {
+      "@id": "https://w3id.org/everse/i/indicators/software_has_tests",
+      "@type": "@id"
+    }
+  ]
 }
diff --git a/quality-tools/junit.json b/quality-tools/junit.json
index 9da3c72f..d19a0e83 100644
--- a/quality-tools/junit.json
+++ b/quality-tools/junit.json
@@ -16,5 +16,19 @@
   "applicationCategory": {
     "@id": "rs:ResearchInfrastructureSoftware",
     "@type": "@id"
-  }
+  },
+  "improvesQualityIndicator": [
+    {
+      "@id": "https://w3id.org/everse/i/indicators/no_critical_vulnerability",
+      "@type": "@id"
+    },
+    {
+      "@id": "https://w3id.org/everse/i/indicators/has_ci-tests",
+      "@type": "@id"
+    },
+    {
+      "@id": "https://w3id.org/everse/i/indicators/software_has_tests",
+      "@type": "@id"
+    }
+  ]
 }