diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index ec27e2a7..e04447f9 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -18,6 +18,11 @@ jobs:
           - os: ubuntu-20.04
             mpisize: 1
             ompsize: 1
+        exclude:
+          - mpisize: 16
+            ompsize: 3
+          - mpisize: 4
+            ompsize: 3
       fail-fast: false
 
     env:
diff --git a/README.md b/README.md
index 8bf07967..3ae5fa7d 100644
--- a/README.md
+++ b/README.md
@@ -27,9 +27,11 @@ You can install HΦ and also get a manual for HΦ from a [release note](https://
 
 ## Licence
 
-The distribution of the program package and the source codes for HPhi follow GNU General Public License version 3 ([GPL v3](http://www.gnu.org/licenses/gpl-3.0.en.html)).We hope that you cite the following reference when you publish the results using HΦ (hphi):
+The distribution of the program package and the source codes for HPhi follow GNU General Public License version 3 ([GPL v3](http://www.gnu.org/licenses/gpl-3.0.en.html)).We hope that you cite the following references when you publish the results using HΦ (hphi):
 
-[“Quantum lattice model solver HΦ”, M. Kawamura, K. Yoshimi, T. Misawa, Y. Yamaji, S. Todo, and N. Kawashima, Computer Physics Communications 217, 180 (2017).](https://github.com/issp-center-dev/HPhi/edit/master/README.md)
+[“Quantum lattice model solver HΦ”, M. Kawamura, K. Yoshimi, T. Misawa, Y. Yamaji, S. Todo, and N. Kawashima, Computer Physics Communications 217, 180 (2017).](https://doi.org/10.1016/j.cpc.2017.04.006)
+
+[“Update of HΦ: Newly added functions and methods in versions 2 and 3”, K. Ido, M. Kawamura, Y. Motoyama, K. Yoshimi, Y. Yamaji, S. Todo, N. Kawashima, and T. Misawa, arXiv:2307.13222.](https://arxiv.org/abs/2307.13222)
 
 Bibtex:
 
@@ -45,6 +47,14 @@ url = {https://www.sciencedirect.com/science/article/pii/S0010465517301200},
 author = {Mitsuaki Kawamura and Kazuyoshi Yoshimi and Takahiro Misawa and Youhei Yamaji and Synge Todo and Naoki Kawashima}
 }
 
+@misc{ido2023update,
+      title={Update of $\mathcal{H}\Phi$: Newly added functions and methods in versions 2 and 3},
+      author={Kota Ido and Mitsuaki Kawamura and Yuichi Motoyama and Kazuyoshi Yoshimi and Youhei Yamaji and Synge Todo and Naoki Kawashima and Takahiro Misawa},
+      year={2023},
+      eprint={2307.13222},
+      archivePrefix={arXiv},
+      primaryClass={cond-mat.str-el}
+}
 
 
 ## Official page