diff --git a/contribute-to-docs/docs-release-process.md b/contribute-to-docs/docs-release-process.md
index 34c7c9b88..7b5c8c21e 100644
--- a/contribute-to-docs/docs-release-process.md
+++ b/contribute-to-docs/docs-release-process.md
@@ -41,18 +41,17 @@ We keep the last 4 releases available per [our support window](https://github.co
 
 To generate the new docs version:
 
-1. In `hack/build.sh` on the main branch, update `VERSIONS` and `RELEASE_BRANCHES`
+1. In `hack/build.sh` on the main branch, update `VERSIONS`
 to include the new version, and remove the oldest. Order matters, most recent first.
 
     For example:
 
     ```
-    VERSIONS=("1.2" "1.1" "1.0" "0.26")
-    RELEASE_BRANCHES=("knative-v1.2.0" "knative-v1.1.0" "knative-v1.0.0" "v0.26.0")
+    VERSIONS=("1.5" "1.4" "1.3" "1.2")
     ```
 
 1. PR the result to main.
 
 ## How GitHub and Netlify are hooked up
 
-TODO: add information about how the docs are built and served using Netlify
+Netlify build is configure via [netlify.toml](../netlify.toml)
diff --git a/hack/build.sh b/hack/build.sh
index 91d4f3bcf..a834f8a5d 100755
--- a/hack/build.sh
+++ b/hack/build.sh
@@ -11,10 +11,9 @@ set -x
 
 # Releasing a new version:
 # 1) Make a release-NN branch as normal.
-# 2) Update VERSIONS and RELEASE_BRANCHES below (on main) to include the new version, and remove the oldest
+# 2) Update VERSIONS below (on main) to include the new version, and remove the oldest
 #    Order matters :-), Most recent first.
-VERSIONS=("1.4" "1.3" "1.2" "1.1") # Docs version, results in the url e.g. knative.dev/docs-0.23/..
-RELEASE_BRANCHES=("knative-v1.4.0" "knative-v1.3.0" "knative-v1.2.0" "v1.1.0") # Release version for serving/eventing yaml files and api references.
+VERSIONS=("1.5" "1.4" "1.3" "1.2") # Docs version, results in the url e.g. knative.dev/docs-0.23/..
 # 4) PR the result to main.
 # 5) Party.
 
@@ -41,7 +40,7 @@ else
   git clone --depth 1 -b ${DOCS_BRANCHES[0]} https://github.com/${GIT_SLUG} "$TEMP/docs-$latest"
   curl -f -L --show-error https://raw.githubusercontent.com/knative/serving/${DOCS_BRANCHES[0]}/docs/serving-api.md -s > "$TEMP/docs-$latest/docs/reference/api/serving-api.md"
   curl -f -L --show-error https://raw.githubusercontent.com/knative/eventing/${DOCS_BRANCHES[0]}/docs/eventing-api.md -s > "$TEMP/docs-$latest/docs/reference/api/eventing-api.md"
-  pushd "$TEMP/docs-$latest"; KNATIVE_VERSION=${RELEASE_BRANCHES[0]//knative-} SAMPLES_BRANCH="${DOCS_BRANCHES[0]}" mkdocs build -d $SITE/docs; popd
+  pushd "$TEMP/docs-$latest"; KNATIVE_VERSION="${VERSIONS[0]}.0" SAMPLES_BRANCH="${DOCS_BRANCHES[0]}" mkdocs build -d $SITE/docs; popd
 
   # Previous release branches release-$version to /v$version-docs
   versionjson=""
@@ -53,7 +52,7 @@ else
     git clone --depth 1 -b ${DOCS_BRANCHES[$i+1]} https://github.com/${GIT_SLUG} "$TEMP/docs-$version"
     curl -f -L --show-error https://raw.githubusercontent.com/knative/serving/${DOCS_BRANCHES[i+1]}/docs/serving-api.md -s > "$TEMP/docs-$version/docs/reference/api/serving-api.md"
     curl -f -L --show-error https://raw.githubusercontent.com/knative/eventing/${DOCS_BRANCHES[i+1]}/docs/eventing-api.md -s > "$TEMP/docs-$version/docs/reference/api/eventing-api.md"
-    pushd "$TEMP/docs-$version"; KNATIVE_VERSION=${RELEASE_BRANCHES[i+1]//knative-} SAMPLES_BRANCH="${DOCS_BRANCHES[i+1]}" VERSION_WARNING=true mkdocs build -d "$SITE/v$version-docs"; popd
+    pushd "$TEMP/docs-$version"; KNATIVE_VERSION="${VERSIONS[i+1]}.0" SAMPLES_BRANCH="${DOCS_BRANCHES[i+1]}" VERSION_WARNING=true mkdocs build -d "$SITE/v$version-docs"; popd
 
   done