diff --git a/.fixtures.yml b/.fixtures.yml
index ccc3e6a..782083b 100644
--- a/.fixtures.yml
+++ b/.fixtures.yml
@@ -7,4 +7,4 @@ fixtures:
       ref: "3.0.0"
     stdlib:
       repo: "puppetlabs/stdlib"
-      ref: "6.5.0"
+      ref: "8.1.0"
diff --git a/metadata.json b/metadata.json
index e92c22c..f342e19 100644
--- a/metadata.json
+++ b/metadata.json
@@ -10,7 +10,7 @@
   "dependencies": [
     {
       "name": "puppetlabs/stdlib",
-      "version_requirement": ">=4.25.0 <7.0.0"
+      "version_requirement": ">=4.25.0 <9.0.0"
     },
     {
       "name": "bodgit/bodgitlib",