diff --git a/.devcontainer/dev/devcontainer.json b/.devcontainer/dev/devcontainer.json
index a978ed11dcc..5775eecc513 100644
--- a/.devcontainer/dev/devcontainer.json
+++ b/.devcontainer/dev/devcontainer.json
@@ -6,7 +6,7 @@
     "features": {
         "ghcr.io/devcontainers/features/hugo:1": {
             "extended": true,
-            "version": "0.123.1"
+            "version": "0.158.0"
         },
         "ghcr.io/devcontainers/features/node:1": {
             "nodeGypDependencies": true,
diff --git a/.github/workflows/deploy.yaml b/.github/workflows/deploy.yaml
index e89d72a2835..c984a58c236 100644
--- a/.github/workflows/deploy.yaml
+++ b/.github/workflows/deploy.yaml
@@ -27,7 +27,7 @@ jobs:
       contents: read
       actions: read  # Needed for artifact access
     env:
-      HUGO_VERSION: "0.123.3"
+      HUGO_VERSION: "0.158.0"
       HUGO_EXTENDED: true
     steps:
       # =======================
diff --git a/.github/workflows/staging-aggregate.yaml b/.github/workflows/staging-aggregate.yaml
index 0d96928bf17..61957d5eff0 100644
--- a/.github/workflows/staging-aggregate.yaml
+++ b/.github/workflows/staging-aggregate.yaml
@@ -221,7 +221,7 @@ jobs:
       contents: read
       actions: read  # Needed for artifact access
     env:
-      HUGO_VERSION: "0.123.3"
+      HUGO_VERSION: "0.158.0"
       HUGO_EXTENDED: true
     steps:
       - name: Checkout repository
diff --git a/config/_default/languages.toml b/config/_default/languages.toml
index f7c6da684d1..66010423b78 100644
--- a/config/_default/languages.toml
+++ b/config/_default/languages.toml
@@ -4,12 +4,12 @@
 
 # Configure the English version of the site.
 [en]
-  languageCode = "en-us"
+  locale = "en-US"
   # contentDir = "content/en"  # Uncomment for multi-lingual sites, and move English content into `en` sub-folder.
 
 # Uncomment the lines below to configure your website in a second language.
 #[zh]
-#  languageCode = "zh-Hans"
+#  locale = "zh-Hans"
 #  contentDir = "content/zh"
 #  title = "Chinese website title..."
 #  [zh.params]
diff --git a/netlify.toml.deprecated b/netlify.toml.deprecated
index 1aaccf280a7..dea339d263d 100644
--- a/netlify.toml.deprecated
+++ b/netlify.toml.deprecated
@@ -10,7 +10,7 @@
   publish = "public"
 
 [build.environment]
-  HUGO_VERSION = "0.92.2"
+  HUGO_VERSION = "0.158.0"
   HUGO_ENABLEGITINFO = "true"
 
 [context.production.environment]
diff --git a/themes/academic/netlify.toml b/themes/academic/netlify.toml
index bac969f6a3c..ea41692f389 100644
--- a/themes/academic/netlify.toml
+++ b/themes/academic/netlify.toml
@@ -5,7 +5,7 @@
 
 [build.environment]
   HUGO_THEME = "repo"
-  HUGO_VERSION = "0.74.3"
+  HUGO_VERSION = "0.158.0"
   HUGO_ENABLEGITINFO = "true"
 
 [context.production.environment]