diff --git a/config.yaml b/config.yaml
index 9d59026..60ba166 100644
--- a/config.yaml
+++ b/config.yaml
@@ -8,7 +8,7 @@
 # lc: Library Carpentry
 # cp: Carpentries (to use for instructor training for instance)
 # incubator: The Carpentries Incubator
-carpentry: 'cp'
+carpentry: 'lab'
 
 # Overall title for pages.
 title: 'Python for Atmosphere and Ocean Scientists'
@@ -35,6 +35,8 @@ branch: 'main'
 # Who to contact if there are any issues
 contact: 'irving.damien@gmail.com'
 
+doi: 'https://doi.org/10.21105/jose.00037'
+
 # Navigation ------------------------------------------------
 #
 # Use the following menu items to specify the order of
diff --git a/md5sum.txt b/md5sum.txt
index 7175555..8237d66 100644
--- a/md5sum.txt
+++ b/md5sum.txt
@@ -1,7 +1,7 @@
 "file" "checksum" "built" "date"
 "CODE_OF_CONDUCT.md" "c93c83c630db2fe2462240bf72552548" "site/built/CODE_OF_CONDUCT.md" "2024-07-25"
 "LICENSE.md" "b24ebbb41b14ca25cf6b8216dda83e5f" "site/built/LICENSE.md" "2024-07-25"
-"config.yaml" "0295d6b581fa4c3251f193b086810abc" "site/built/config.yaml" "2024-07-25"
+"config.yaml" "d5a8fc81c32324eeca3376f5d3142691" "site/built/config.yaml" "2024-07-26"
 "helper_lesson_check.md" "1d1b53176140a057b588969f9f60fa61" "site/built/helper_lesson_check.md" "2024-07-25"
 "index.md" "0e62af27fdd16f8c6f2c9e1fef67e750" "site/built/index.md" "2024-07-25"
 "paper.md" "32ace9442c642b5e25ce659e7ae9df72" "site/built/paper.md" "2024-07-25"