diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index e1672b7..fd4b5d6 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -7,6 +7,22 @@ on:
       - main
 
 jobs:
+  extract_environment:
+    runs-on: ubuntu-latest
+    outputs:
+      environment: ${{ steps.extract_environment.outputs.environment }}
+    steps:
+      - name: Extract Environment
+        run: |
+          if [ ${GITHUB_REF} == "refs/heads/main" ]; then
+            echo "##[set-output name=environment;]$(echo "prd")"
+          elif [ ${GITHUB_REF} == "refs/heads/alpha" ]; then
+            echo "##[set-output name=environment;]$(echo "dev")"
+          elif [ ${GITHUB_REF} == "refs/heads/beta" ]; then
+            echo "##[set-output name=environment;]$(echo "stg")"
+          fi
+        id: extract_environment
+
   deploy:
     runs-on: self-hosted
     steps:
diff --git a/src/middlewares/authentication.ts b/src/middlewares/authentication.ts
index 8fb0ccb..3a7a1f9 100644
--- a/src/middlewares/authentication.ts
+++ b/src/middlewares/authentication.ts
@@ -95,29 +95,31 @@ const verifyToken = async (accessToken: string) => {
 
   try {
     await setUp(awsRegion, awsPoolId);
-    if (accessToken) {
-      const user: any = decode(accessToken, { complete: true });
-
-      if (user === null) {
-        throw new UnauthorizedException();
-      }
-
-      const { kid } = user.header;
-      const pem = pems.filter((item: any) => item[kid]);
-      const pemValue: any = pem[0][kid];
-
-      if (!pem) {
-        throw new UnauthorizedException();
-      }
-
-      verify(accessToken, pemValue, (err: any) => {
-        if (err) {
-          throw new UnauthorizedException();
-        }
-
-        return;
-      });
+    if (!accessToken) {
+      throw new UnauthorizedException();
     }
+
+    const user: any = decode(accessToken, { complete: true });
+
+    if (user === null) {
+      throw new UnauthorizedException();
+    }
+
+    const { kid } = user.header;
+    const pem = pems.filter((item: any) => item[kid]);
+    const pemValue: any = pem[0][kid];
+
+    if (!pem) {
+      throw new UnauthorizedException();
+    }
+
+    verify(accessToken, pemValue, (err: any) => {
+      if (err) {
+        throw new UnauthorizedException();
+      }
+
+      return;
+    });
   } catch (error) {
     throw new UnauthorizedException();
   }