diff --git a/.github/workflows/GHPages.yml b/.github/workflows/GHPages.yml
index 0c8fbd3e..05ef3298 100644
--- a/.github/workflows/GHPages.yml
+++ b/.github/workflows/GHPages.yml
@@ -10,6 +10,9 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
+      - name: Install mermaid-filter
+        run: |
+          npm i -g mermaid-filter
       - uses: docker://pandoc/latex:2.9
         with:
           args: |
diff --git a/.github/workflows/test-build-resources-with-pandoc.yml b/.github/workflows/test-build-resources-with-pandoc.yml
index 3398838d..3904b822 100644
--- a/.github/workflows/test-build-resources-with-pandoc.yml
+++ b/.github/workflows/test-build-resources-with-pandoc.yml
@@ -14,6 +14,9 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
+      - name: Install mermaid-filter
+        run: |
+          npm i -g mermaid-filter
       - uses: docker://pandoc/latex:2.9
         with:
           args: sh build-resources-with-pandoc.sh
diff --git a/build-resources-with-pandoc.sh b/build-resources-with-pandoc.sh
index ea7096d5..a9b9b9bd 100644
--- a/build-resources-with-pandoc.sh
+++ b/build-resources-with-pandoc.sh
@@ -1,5 +1,3 @@
-npm i -g mermaid-filter
-
 ROOT_DIR=`pwd`
 CSS_PATH="${ROOT_DIR}/documents/common/pandoc_styles/css/style.css"
 STYLE_DOCX_PATH="${ROOT_DIR}/documents/common/pandoc_styles/スタイル.docx"