diff --git a/.Rbuildignore b/.Rbuildignore
index bbdb868..0f446e4 100644
--- a/.Rbuildignore
+++ b/.Rbuildignore
@@ -12,3 +12,4 @@ LICENSE
 ^vignettes/pbmc\.rds$
 ^vignettes/liu\.rds$
 ^vignettes/hannum\.rds$
+^CRAN-SUBMISSION$
diff --git a/CRAN-SUBMISSION b/CRAN-SUBMISSION
new file mode 100644
index 0000000..1528b9e
--- /dev/null
+++ b/CRAN-SUBMISSION
@@ -0,0 +1,3 @@
+Version: 0.1.0
+Date: 2024-01-11 18:03:13 UTC
+SHA: fc8940b5a4390dce3574e35518499e717cf617a4
diff --git a/README.md b/README.md
index 4c10740..07c69f6 100644
--- a/README.md
+++ b/README.md
@@ -28,4 +28,4 @@ This software is developed by Zeyuan Johnson Chen (johnsonchen@cs.ucla.edu) and
 
 ### License
 
-Unico is available under the <a href="https://opensource.org/licenses/GPL-3.0" target="_blank">GPL-3 license</a>.
+Unico is available under the <a href="https://opensource.org/license/gpl-3-0/" target="_blank">GPL-3 license</a>.