diff --git a/.github/workflows/deploy-pr-preview.yml b/.github/workflows/deploy-pr-preview.yml
index ce7b1e7ec70..d5b68a9ecfd 100644
--- a/.github/workflows/deploy-pr-preview.yml
+++ b/.github/workflows/deploy-pr-preview.yml
@@ -9,6 +9,9 @@ on:
     paths:
       - "docs/sources/**"
 
+env:
+  MIMIR_VERSION: v2.15.x
+
 jobs:
   deploy-pr-preview:
     if: "!github.event.pull_request.head.repo.fork"
@@ -21,11 +24,11 @@ jobs:
       sources: |
         [
           {
-            "index_file": "content/docs/mimir/_index.md",
-            "relative_prefix": "/docs/mimir/latest/",
+            "index_file": null,
+            "relative_prefix": "/docs/mimir/${{ env.MIMIR_VERSION }}/",
             "repo": "mimir",
             "source_directory": "docs/sources/mimir",
-            "website_directory": "content/docs/mimir/latest"
+            "website_directory": "content/docs/mimir/${{ env.MIMIR_VERSION }}"
           },
           {
             "index_file": "content/docs/helm-charts/mimir-distributed/_index.md",