diff --git a/DESCRIPTION b/DESCRIPTION
index 2e6162f..3ad24e2 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -16,7 +16,7 @@ Authors@R: c(
 Description:
     Query, download climate change projection data from the 'CMIP6' (Coupled
     Model Intercomparison Project Phase 6) project
-    <https://pcmdi.llnl.gov/CMIP6> in the 'ESGF' (Earth System Grid Federation)
+    <https://pcmdi.llnl.gov/CMIP6/> in the 'ESGF' (Earth System Grid Federation)
     platform <https://esgf.llnl.gov>, and create future 'EnergyPlus'
     <https://energyplus.net> Weather ('EPW') files adjusted from climate changes
     using data from Global Climate Models ('GCM').
diff --git a/R/epwshiftr-package.R b/R/epwshiftr-package.R
index bf13082..08a99ec 100644
--- a/R/epwshiftr-package.R
+++ b/R/epwshiftr-package.R
@@ -1,7 +1,7 @@
 #' epwshiftr: Create future EnergyPlus Weather files using CMIP6 data
 #'
 #' Query, download climate change projection data from the [CMIP6 (Coupled Model
-#' Intercomparison Project Phase 6) project](https://pcmdi.llnl.gov/CMIP6) in
+#' Intercomparison Project Phase 6) project](https://pcmdi.llnl.gov/CMIP6/) in
 #' the [ESGF (Earth System Grid Federation) platform](https://esgf.llnl.gov),
 #' and create future [EnergyPlus](https://energyplus.net) Weather (EPW) files
 #' adjusted from climate changes using data from Global Climate Models (GCM).
diff --git a/README.Rmd b/README.Rmd
index 614f8d0..509c547 100644
--- a/README.Rmd
+++ b/README.Rmd
@@ -228,7 +228,7 @@ Hongyuan Jia and Adrian Chong
   > licensing restrictions, which are recorded in each file as a global
   > attribute (named “license”).
   >
-  > Please carefully read and adhere to the [CMIP6 Terms of Use](https://pcmdi.llnl.gov/CMIP6/TermsOfUse).
+  > Please carefully read and adhere to the [CMIP6 Terms of Use](https://pcmdi.llnl.gov/CMIP6/TermsOfUse/).
 
 ## Contribute
 
diff --git a/README.md b/README.md
index 9715af5..08c33da 100644
--- a/README.md
+++ b/README.md
@@ -474,7 +474,7 @@ Hongyuan Jia and Adrian Chong
     > are recorded in each file as a global attribute (named “license”).
     > 
     > Please carefully read and adhere to the [CMIP6 Terms of
-    > Use](https://pcmdi.llnl.gov/CMIP6/TermsOfUse).
+    > Use](https://pcmdi.llnl.gov/CMIP6/TermsOfUse/).
 
 ## Contribute
 
diff --git a/cran-comments.md b/cran-comments.md
index 65f5ff9..475e3f2 100644
--- a/cran-comments.md
+++ b/cran-comments.md
@@ -17,13 +17,24 @@
 Comments from CRAN maintainer:
 
 ```
-'Packages which use Internet resources should fail gracefully with an
-informative message if the resource is not available or has changed (and
-not give a check warning nor error).'
+   Found the following (possibly) invalid URLs:
+     URL: https://pcmdi.llnl.gov/CMIP6 (moved to
+https://pcmdi.llnl.gov/CMIP6/)
+       From: DESCRIPTION
+             man/epwshiftr-package.Rd
+       Status: 200
+       Message: OK
+     URL: https://pcmdi.llnl.gov/CMIP6/TermsOfUse (moved to
+https://pcmdi.llnl.gov/CMIP6/TermsOfUse/)
+       From: README.md
+       Status: 200
+       Message: OK
+
+-> trailing slashes, please.
+
+Please fix and resubmit.
 ```
 
 Revisions:
 
-* I added an informative message when the resource is not available.
-* I updated tests accordingly to run certain tests only when the resource is
-  available.
+* I have revised corresponding files to add trailing slashes.
diff --git a/man/epwshiftr-package.Rd b/man/epwshiftr-package.Rd
index 5cb0aff..a765200 100644
--- a/man/epwshiftr-package.Rd
+++ b/man/epwshiftr-package.Rd
@@ -6,7 +6,7 @@
 \alias{epwshiftr-package}
 \title{epwshiftr: Create future EnergyPlus Weather files using CMIP6 data}
 \description{
-Query, download climate change projection data from the \href{https://pcmdi.llnl.gov/CMIP6}{CMIP6 (Coupled Model Intercomparison Project Phase 6) project} in
+Query, download climate change projection data from the \href{https://pcmdi.llnl.gov/CMIP6/}{CMIP6 (Coupled Model Intercomparison Project Phase 6) project} in
 the \href{https://esgf.llnl.gov}{ESGF (Earth System Grid Federation) platform},
 and create future \href{https://energyplus.net}{EnergyPlus} Weather (EPW) files
 adjusted from climate changes using data from Global Climate Models (GCM).