diff --git a/README.Rmd b/README.Rmd
index 3ec8adc..efb3be6 100644
--- a/README.Rmd
+++ b/README.Rmd
@@ -62,7 +62,7 @@ Chen Yang, Aaron Burberry, Xuan Cao, Jiahao Mai, Liangliang Zhang. (2023). [ggpi
 
 BibTeX entry: @misc{yang2023ggpicrust2, title={ggpicrust2: an R package for PICRUSt2 predicted functional profile analysis and visualization}, author={Chen Yang and Aaron Burberry and Jiahao Mai and Xuan Cao and Liangliang Zhang}, year={2023}, eprint={2303.10388}, archivePrefix={arXiv}, primaryClass={stat.AP} }
 
-ResearchGate preprint link: [Click here]
+ResearchGate preprint link: [Click here](https://www.researchgate.net/publication/369380349_ggpicrust2_an_R_package_for_PICRUSt2_predicted_functional_profile_analysis_and_visualization)
 
 ## Installation {#installation}
 
diff --git a/README.md b/README.md
index 0776a89..556ed05 100644
--- a/README.md
+++ b/README.md
@@ -83,7 +83,8 @@ author={Chen Yang and Aaron Burberry and Jiahao Mai and Xuan Cao and
 Liangliang Zhang}, year={2023}, eprint={2303.10388},
 archivePrefix={arXiv}, primaryClass={stat.AP} }
 
-ResearchGate preprint link: \[Click here\]
+ResearchGate preprint link: [Click
+here](https://www.researchgate.net/publication/369380349_ggpicrust2_an_R_package_for_PICRUSt2_predicted_functional_profile_analysis_and_visualization)
 
 ## Installation