diff --git a/.github/workflows/stack-ci.yml b/.github/workflows/stack-ci.yml
index 223f56d1..a7e918c7 100644
--- a/.github/workflows/stack-ci.yml
+++ b/.github/workflows/stack-ci.yml
@@ -27,3 +27,4 @@ jobs:
     - uses: freckle/stack-action@v4
       with:
         working-directory: message-index
+        pedantic: false
diff --git a/message-index/message-index.cabal b/message-index/message-index.cabal
index 2270da6f..26e06b1f 100644
--- a/message-index/message-index.cabal
+++ b/message-index/message-index.cabal
@@ -6,7 +6,7 @@ cabal-version:      2.0
 executable site
   main-is:          site.hs
   build-depends:    base == 4.*
-                  , hakyll ^>= 4.16.0.0
+                  , hakyll ^>= 4.16.1.0
                   , commonmark >= 0.2.2
                   , filepath ^>= 1.4
                   , microlens ^>= 0.4.12
diff --git a/message-index/stack.yaml b/message-index/stack.yaml
index a9e214ac..e54da7c1 100644
--- a/message-index/stack.yaml
+++ b/message-index/stack.yaml
@@ -1,2 +1,3 @@
 resolver: lts-19.10
-# system-ghc: true
+extra-deps:
+  - hakyll-4.16.1.0
diff --git a/message-index/stack.yaml.lock b/message-index/stack.yaml.lock
index 1e5ff0fe..116b8451 100644
--- a/message-index/stack.yaml.lock
+++ b/message-index/stack.yaml.lock
@@ -3,10 +3,17 @@
 # For more information, please see the documentation at:
 #   https://docs.haskellstack.org/en/stable/lock_files
 
-packages: []
+packages:
+- completed:
+    hackage: hakyll-4.16.1.0@sha256:2f5984ec2f0bfc066279f61747839c149f90fbc0d4655c3cf51acda2cf7111b6,9845
+    pantry-tree:
+      sha256: 8bcd5b6e99b7e461508c39e7c71dfe7e90d0dae2620b98464d697df5ed2fda23
+      size: 9185
+  original:
+    hackage: hakyll-4.16.1.0
 snapshots:
 - completed:
+    sha256: 005f204647467d65c4ab549a5ca35d54b3d90a84a99a4ffc5d421a4018854fe2
     size: 618509
     url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/19/10.yaml
-    sha256: 005f204647467d65c4ab549a5ca35d54b3d90a84a99a4ffc5d421a4018854fe2
   original: lts-19.10