diff --git a/lib/manager/azure-pipelines/extract.ts b/lib/manager/azure-pipelines/extract.ts
index d94c3881277e73a789b59c380d93c7190c0c64c8..803b569ce6b228a7fdfb52f346b29434af18c9dc 100644
--- a/lib/manager/azure-pipelines/extract.ts
+++ b/lib/manager/azure-pipelines/extract.ts
@@ -69,7 +69,7 @@ export function extractContainer(
 export function parseAzurePipelines(content: string): AzurePipelines | null {
   let pkg = null;
   try {
-    pkg = safeLoad(content);
+    pkg = safeLoad(content, { json: true });
   } catch (err) /* istanbul ignore next */ {
     logger.error({ err }, 'Error parsing azure-pipelines content');
     return null;
diff --git a/lib/manager/kustomize/extract.ts b/lib/manager/kustomize/extract.ts
index ea4861ef2831fdad6fb2b12d25c7ea9ee5561076..0468db0a28818290b566d17b45b5bd1bff10f5c6 100644
--- a/lib/manager/kustomize/extract.ts
+++ b/lib/manager/kustomize/extract.ts
@@ -79,7 +79,7 @@ export function extractImage(image: Image): PackageDependency | null {
 export function parseKustomize(content: string): Kustomize | null {
   let pkg = null;
   try {
-    pkg = safeLoad(content);
+    pkg = safeLoad(content, { json: true });
   } catch (e) /* istanbul ignore next */ {
     return null;
   }
diff --git a/lib/manager/pub/__fixtures__/update.yaml b/lib/manager/pub/__fixtures__/update.yaml
index 2dcd2f5e29c93f525ab63bef6e2447cc88f0c6fa..ff179761924860751c7263a9889d203df29a33e0 100644
--- a/lib/manager/pub/__fixtures__/update.yaml
+++ b/lib/manager/pub/__fixtures__/update.yaml
@@ -4,7 +4,7 @@ dev_dependencies:
     version: 0.1
 
 dependencies:
-  bar:
+  - bar:
     sdk: flatter
   foo: 1
   bar:
diff --git a/lib/manager/pub/extract.ts b/lib/manager/pub/extract.ts
index e53e6da59508b1e6a35be8116489b5c9d753277b..3b447c147e8e35b6c916bd284949883c98a12ab8 100644
--- a/lib/manager/pub/extract.ts
+++ b/lib/manager/pub/extract.ts
@@ -44,7 +44,7 @@ export function extractPackageFile(
   packageFile: string
 ): PackageFile | null {
   try {
-    const doc = safeLoad(content);
+    const doc = safeLoad(content, { json: true });
     const deps = [
       ...getDeps(doc.dependencies, {
         depType: 'dependencies',