diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 548bee8f43d..c94b22d84fd 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -279,8 +279,11 @@ for `cardano-node` on 32 architecture are too high).
 New versions of packages are published on [CHaP].  To release packages to
 [CHaP] one should use `./scritp/release-to-chap.sh`.
 
-* First run `./script/release-to-chap.sh -r` to see which changes will be
-  published. And verify that all `CHANGELOG.md` files are up-to-date.
+* First run `./script/release-to-chap.sh -r` to see which changes can be
+  published.
+* Update versions in `*.cabal` files according to changes in `CHANGELOG.md`
+  files.
+* Update `CHANGELOG.md` files.
 * Run `./script/release-to-chap.sh` which will create a PR in
   `cardano-haskell-packages` repo (pointed by `CARDANO_HASKELL_PACKAGES_DIR`
   environment variable or `/tmp/chap` if it's not defined).
diff --git a/scripts/build-with-chap.sh b/scripts/build-with-chap.sh
index 02a55320a7a..7dac3bf2160 100755
--- a/scripts/build-with-chap.sh
+++ b/scripts/build-with-chap.sh
@@ -19,13 +19,13 @@ fi
 cabal_files=$(fd -ae 'cabal')
 for cf in $cabal_files; do
   name=$(cat $cf | grep '^name:' | awk '{ print $2 }')
-  version=$(ls -1 $CHAP_DIR/_sources/$name | sort | tail -1)
+  version=$(ls -1 $CHAP_DIR/_sources/$name | sort -V | tail -1)
   tag="$name-$version"
   echo "$tag ($(git rev-parse $tag))"
   git restore --source="$name-$version" -- $name
   revdir="$CHAP_DIR/_sources/$name/$version/revisions"
   if [[ -d $revdir ]]; then
-    rev=$(ls $revdir | sort | tail -1)
+    rev=$(ls $revdir | sort -V | tail -1)
     echo "copy revision $revdir/$rev to $name/$name.cabal"
     cp $revdir/$rev "$name/$name.cabal"
   fi