diff --git a/.github/workflows/phono3py-pytest-conda-mkl-phphmtblas.yml b/.github/workflows/phono3py-pytest-conda-mkl-phphmtblas.yml
index bb1f91ca..36bc64eb 100644
--- a/.github/workflows/phono3py-pytest-conda-mkl-phphmtblas.yml
+++ b/.github/workflows/phono3py-pytest-conda-mkl-phphmtblas.yml
@@ -26,6 +26,13 @@ jobs:
         conda install --yes python=${{ matrix.python-version }}
         #conda install --yes matplotlib-base pyyaml "libblas=*=*openblas" openblas h5py scipy pytest codecov pytest-cov spglib alm cmake c-compiler
         conda install --yes matplotlib-base pyyaml "libblas=*=*mkl" mkl-include h5py scipy pytest codecov pytest-cov spglib alm cmake c-compiler
+    - name: Install symfc develop branch
+      run: |
+        conda activate test
+        git clone --depth 1 https://github.com/symfc/symfc.git
+        cd symfc
+        pip install -e . -vvv
+        cd ..
     - name: Install phonopy develop branch
       run: |
         conda activate test
diff --git a/.github/workflows/phono3py-pytest-conda-mkl-v2.yml b/.github/workflows/phono3py-pytest-conda-mkl-v2.yml
index b184c6e6..4e755b19 100644
--- a/.github/workflows/phono3py-pytest-conda-mkl-v2.yml
+++ b/.github/workflows/phono3py-pytest-conda-mkl-v2.yml
@@ -26,6 +26,13 @@ jobs:
         conda install --yes python=${{ matrix.python-version }}
         #conda install --yes matplotlib-base pyyaml "libblas=*=*openblas" openblas h5py scipy pytest codecov pytest-cov spglib alm cmake c-compiler
         conda install --yes matplotlib-base pyyaml "libblas=*=*mkl" mkl-include h5py scipy pytest codecov pytest-cov spglib alm cmake c-compiler
+    - name: Install symfc develop branch
+      run: |
+        conda activate test
+        git clone --depth 1 https://github.com/symfc/symfc.git
+        cd symfc
+        pip install -e . -vvv
+        cd ..
     - name: Install phonopy develop branch
       run: |
         conda activate test
diff --git a/.github/workflows/phono3py-pytest-conda-mkl.yml b/.github/workflows/phono3py-pytest-conda-mkl.yml
index c4ea82f6..486af093 100644
--- a/.github/workflows/phono3py-pytest-conda-mkl.yml
+++ b/.github/workflows/phono3py-pytest-conda-mkl.yml
@@ -26,6 +26,13 @@ jobs:
         conda install --yes python=${{ matrix.python-version }}
         #conda install --yes matplotlib-base pyyaml "libblas=*=*openblas" openblas h5py scipy pytest codecov pytest-cov spglib alm cmake c-compiler
         conda install --yes matplotlib-base pyyaml "libblas=*=*mkl" mkl-include h5py scipy pytest codecov pytest-cov spglib alm cmake c-compiler
+    - name: Install symfc develop branch
+      run: |
+        conda activate test
+        git clone --depth 1 https://github.com/symfc/symfc.git
+        cd symfc
+        pip install -e . -vvv
+        cd ..
     - name: Install phonopy develop branch
       run: |
         conda activate test
diff --git a/.github/workflows/phono3py-pytest-conda-numpy2.yml b/.github/workflows/phono3py-pytest-conda-numpy2.yml
index f7bdb131..cc1798ff 100644
--- a/.github/workflows/phono3py-pytest-conda-numpy2.yml
+++ b/.github/workflows/phono3py-pytest-conda-numpy2.yml
@@ -32,6 +32,13 @@ jobs:
         cd spglib
         pip install -e . -vvv
         cd ..
+    - name: Install symfc develop branch
+      run: |
+        conda activate test
+        git clone --depth 1 https://github.com/symfc/symfc.git
+        cd symfc
+        pip install -e . -vvv
+        cd ..
     - name: Install phonopy develop branch
       run: |
         conda activate test
diff --git a/.github/workflows/phono3py-pytest-conda-phphmtblas.yml b/.github/workflows/phono3py-pytest-conda-phphmtblas.yml
index bb95afd0..5d6aac02 100644
--- a/.github/workflows/phono3py-pytest-conda-phphmtblas.yml
+++ b/.github/workflows/phono3py-pytest-conda-phphmtblas.yml
@@ -26,6 +26,13 @@ jobs:
         conda install --yes python=${{ matrix.python-version }}
         conda install --yes matplotlib-base pyyaml "libblas=*=*openblas" openblas h5py scipy pytest codecov pytest-cov spglib alm cmake c-compiler
         #conda install --yes matplotlib-base pyyaml "libblas=*=*mkl" mkl-include h5py scipy pytest codecov pytest-cov spglib alm cmake c-compiler
+    - name: Install symfc develop branch
+      run: |
+        conda activate test
+        git clone --depth 1 https://github.com/symfc/symfc.git
+        cd symfc
+        pip install -e . -vvv
+        cd ..
     - name: Install phonopy develop branch
       run: |
         conda activate test