diff --git a/lib/modules/manager/mix/extract.spec.ts b/lib/modules/manager/mix/extract.spec.ts
index ea02f12faa3ba3..37d7c990e60585 100644
--- a/lib/modules/manager/mix/extract.spec.ts
+++ b/lib/modules/manager/mix/extract.spec.ts
@@ -119,19 +119,19 @@ describe('modules/manager/mix/extract', () => {
           packageName: 'raygun',
         },
         {
-          currentValue: "~> 1.7",
-          datasource: "hex",
-          depName: "credo",
+          currentValue: '~> 1.7',
+          datasource: 'hex',
+          depName: 'credo',
           depType: 'devDependencies',
-          packageName: "credo",
+          packageName: 'credo',
         },
         {
-          currentValue: "== 0.37.0",
-          currentVersion: "0.37.0",
-          datasource: "hex",
-          depName: "floki",
-          depType: "devDependencies",
-          packageName: "floki",
+          currentValue: '== 0.37.0',
+          currentVersion: '0.37.0',
+          datasource: 'hex',
+          depName: 'floki',
+          depType: 'devDependencies',
+          packageName: 'floki',
         },
       ]);
     });
@@ -258,22 +258,21 @@ describe('modules/manager/mix/extract', () => {
           lockedVersion: '0.4.0',
         },
         {
-          currentValue: "~> 1.7",
-          datasource: "hex",
-          depName: "credo",
+          currentValue: '~> 1.7',
+          datasource: 'hex',
+          depName: 'credo',
           depType: 'devDependencies',
-          packageName: "credo",
-          lockedVersion: "1.7.10",
-
+          packageName: 'credo',
+          lockedVersion: '1.7.10',
         },
         {
-          currentValue: "== 0.37.0",
-          currentVersion: "0.37.0",
-          datasource: "hex",
-          depName: "floki",
-          depType: "devDependencies",
-          lockedVersion: "0.37.0",
-          packageName: "floki",
+          currentValue: '== 0.37.0',
+          currentVersion: '0.37.0',
+          datasource: 'hex',
+          depName: 'floki',
+          depType: 'devDependencies',
+          lockedVersion: '0.37.0',
+          packageName: 'floki',
         },
       ]);
     });
diff --git a/lib/modules/manager/mix/extract.ts b/lib/modules/manager/mix/extract.ts
index 6957a49bd27301..c28ab016bcef51 100644
--- a/lib/modules/manager/mix/extract.ts
+++ b/lib/modules/manager/mix/extract.ts
@@ -61,7 +61,7 @@ export async function extractPackageFile(
 
         const dep: PackageDependency = {
           depName: app,
-          depType: "dependencies"
+          depType: 'dependencies',
         };
 
         if (git ?? github) {
@@ -85,8 +85,8 @@ export async function extractPackageFile(
           }
         }
 
-        if (onlyValue !== undefined && !onlyEnvironments.includes("prod")) {
-          dep.depType = "devDependencies"
+        if (onlyValue !== undefined && !onlyEnvironments.includes('prod')) {
+          dep.depType = 'devDependencies';
         }
 
         deps.set(app, dep);