diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 83aa787..296b616 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -4,6 +4,7 @@ on:
     branches:
       - master
   pull_request:
+  workflow_dispatch:
 jobs:
   test:
     runs-on: ubuntu-latest
@@ -46,3 +47,17 @@ jobs:
 
       - name: Check diff
         run: git diff
+
+  quoted_version:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ./
+        id: depup
+        with:
+          file: testdata/testfile
+          version_name: POETRY_VERSION
+          repo: python-poetry/poetry
+
+      - name: Check diff
+        run: git diff
diff --git a/testdata/testfile b/testdata/testfile
index 8146a6f..3d1c073 100644
--- a/testdata/testfile
+++ b/testdata/testfile
@@ -36,3 +36,6 @@ Other test cases.
 REDPEN_VERSION=1.10.1
 
 TMUX_VERSION=3.0
+
+POETRY_VERSION="1.1.3"
+ENV POETRY_VERSION='1.1.3'