diff --git a/.github/workflows/mkdocs-deployment.yml b/.github/workflows/mkdocs-deployment.yml
index 15754f5d..38fe8234 100644
--- a/.github/workflows/mkdocs-deployment.yml
+++ b/.github/workflows/mkdocs-deployment.yml
@@ -16,3 +16,4 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           CONFIG_FILE: docs/mkdocs.yml
+          REQUIREMENTS: docs/requirements.txt
diff --git a/docs/mkdocs.yml b/docs/mkdocs.yml
index 0f3e0cd5..91d02c8e 100644
--- a/docs/mkdocs.yml
+++ b/docs/mkdocs.yml
@@ -3,6 +3,7 @@ site_name: 'doccano'
 site_description: 'A Text Annotation tool for Humans'
 site_author: 'Hiroki Nakayama'
 site_url: 'https://doccano.github.io/doccano/'
+docs_dir: .
 
 # Repository
 repo_name: 'doccano/doccano'
@@ -25,6 +26,9 @@ extra:
     - icon: 'fontawesome/brands/github'
       link: 'https://twitter.com/Hironsan13'
 
+plugins:
+  - same-dir
+
 # Page tree
 nav:
   - Doccano: index.md
diff --git a/docs/requirements.txt b/docs/requirements.txt
new file mode 100644
index 00000000..fbee2369
--- /dev/null
+++ b/docs/requirements.txt
@@ -0,0 +1 @@
+mkdocs-same-dir