diff --git a/CHANGELOG b/CHANGELOG
index e71df697b78..aa370005fd8 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,7 @@
+mkdocs-material-9.1.8 (2023-04-24)
+
+- Fixed #5417: Theme breaks when palette is not defined (9.1.7 regression)
+
 mkdocs-material-9.1.7+insiders-4.32.6 (2023-04-22)
 
 - Fixed #5336: Interplay of blog plugin with git-revision-date-localized
diff --git a/docs/changelog/index.md b/docs/changelog/index.md
index 1d1b4fa2e5c..b2b942ce4b7 100644
--- a/docs/changelog/index.md
+++ b/docs/changelog/index.md
@@ -2,6 +2,10 @@
 
 ## Material for MkDocs
 
+### 9.1.8 <small>April 24, 2023</small> { id="9.1.8" }
+
+- Fixed #5417: Theme breaks when `palette` is not defined (9.1.7 regression)
+
 ### 9.1.7 <small>April 22, 2023</small> { id="9.1.7" }
 
 - Updated Persian (Farsi) and Turkish translations
diff --git a/material/base.html b/material/base.html
index 959af48e7c3..073125b3129 100644
--- a/material/base.html
+++ b/material/base.html
@@ -28,7 +28,7 @@
         <link rel="next" href="{{ page.next_page.url | url }}">
       {% endif %}
       <link rel="icon" href="{{ config.theme.favicon | url }}">
-      <meta name="generator" content="mkdocs-{{ mkdocs_version }}, mkdocs-material-9.1.7">
+      <meta name="generator" content="mkdocs-{{ mkdocs_version }}, mkdocs-material-9.1.8">
     {% endblock %}
     {% block htmltitle %}
       {% if page.meta and page.meta.title %}
diff --git a/package-lock.json b/package-lock.json
index 65005c6a399..a975e526ff0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "mkdocs-material",
-  "version": "9.1.7",
+  "version": "9.1.8",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "mkdocs-material",
-      "version": "9.1.7",
+      "version": "9.1.8",
       "license": "MIT",
       "dependencies": {
         "array-flat-polyfill": "^1.0.1",
diff --git a/package.json b/package.json
index 737351a7499..1b45922f884 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mkdocs-material",
-  "version": "9.1.7",
+  "version": "9.1.8",
   "description": "Documentation that simply works",
   "keywords": [
     "mkdocs",