diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index 3219270..eafde7b 100644
--- a/.github/workflows/update.yml
+++ b/.github/workflows/update.yml
@@ -38,10 +38,10 @@ jobs:
           body: |
             Automatically created pull-request to update Terraform versions.
 
-            This is the result of running:
+            This is the result of configuring a GITHUB_TOKEN in `.env` and running:
 
             ```
-            env GITHUB_TOKEN=<token> nix develop --impure --command python3 update-versions.py
+            devenv shell update-versions
             ```
           delete-branch: true
           reviewers: |
diff --git a/versions.json b/versions.json
index 1483ad7..6853864 100644
--- a/versions.json
+++ b/versions.json
@@ -1,5 +1,9 @@
 {
   "releases": {
+    "1.8.1": {
+      "hash": "sha256-q/r1KK0svdK/5Za4bqU6bGgTcWmG+YZFJUFRKqPAWSw=",
+      "vendorHash": "sha256-xpgGceAA+kvwUp4T0m9rnbPoZ3uJHU2KIRsrcGr8dRo="
+    },
     "1.8.0": {
       "hash": "sha256-An/ElR1tXQSb9x26R5o9gcb4XKTeVxlv+72Whcrdeoc=",
       "vendorHash": "sha256-xpgGceAA+kvwUp4T0m9rnbPoZ3uJHU2KIRsrcGr8dRo="
@@ -294,7 +298,7 @@
     }
   },
   "latest": {
-    "1.8": "1.8.0",
+    "1.8": "1.8.1",
     "1.7": "1.7.5",
     "1.6": "1.6.6",
     "1.5": "1.5.7",