diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5e349e3..5efdddd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,12 @@
+## [4.9.1](https://github.com/dequelabs/axe-core-nuget/compare/v4.9.0...v4.9.1) (2024-05-08)
+
+
+### Bug Fixes
+
+* Update axe-core to v4.9.1 ([#171](https://github.com/dequelabs/axe-core-nuget/issues/171)) ([84ec56f](https://github.com/dequelabs/axe-core-nuget/commit/84ec56f47e256e46c1b35e7cfee0e36338a00de8))
+
+
+
 # [4.9.0](https://github.com/dequelabs/axe-core-nuget/compare/v4.8.2...v4.9.0) (2024-03-26)
 
 
diff --git a/package.json b/package.json
index 23235c1..724835d 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "axe-core-nuget",
   "description": "this file is used by release workflows as the source of truth for the current version of all NuGet packages",
-  "version": "4.9.0",
+  "version": "4.9.1",
   "license": "MPL-2.0 AND MIT",
   "repository": "dequelabs/axe-core-nuget",
   "private": true,
diff --git a/packages/commons/src/Deque.AxeCore.Commons.csproj b/packages/commons/src/Deque.AxeCore.Commons.csproj
index 159db31..e00e22d 100644
--- a/packages/commons/src/Deque.AxeCore.Commons.csproj
+++ b/packages/commons/src/Deque.AxeCore.Commons.csproj
@@ -19,7 +19,7 @@
     <EnableNETAnalyzers>true</EnableNETAnalyzers>
 
     <!-- Do not update this by-hand; updates are automated via the create-release workflow -->
-    <VersionPrefix>4.9.0</VersionPrefix>
+    <VersionPrefix>4.9.1</VersionPrefix>
     <VersionSuffix>development</VersionSuffix>
   </PropertyGroup>
 
diff --git a/packages/commons/src/package-lock.json b/packages/commons/src/package-lock.json
index f0e3001..7a87cef 100644
--- a/packages/commons/src/package-lock.json
+++ b/packages/commons/src/package-lock.json
@@ -6,13 +6,13 @@
     "": {
       "license": "MIT",
       "dependencies": {
-        "axe-core": "^4.9.0"
+        "axe-core": "^4.9.1"
       }
     },
     "node_modules/axe-core": {
-      "version": "4.9.0",
-      "resolved": "https://registry.npmjs.org/axe-core/-/axe-core-4.9.0.tgz",
-      "integrity": "sha512-H5orY+M2Fr56DWmMFpMrq5Ge93qjNdPVqzBv5gWK3aD1OvjBEJlEzxf09z93dGVQeI0LiW+aCMIx1QtShC/zUw==",
+      "version": "4.9.1",
+      "resolved": "https://registry.npmjs.org/axe-core/-/axe-core-4.9.1.tgz",
+      "integrity": "sha512-QbUdXJVTpvUTHU7871ppZkdOLBeGUKBQWHkHrvN2V9IQWGMt61zf3B45BtzjxEJzYuj0JBjBZP/hmYS/R9pmAw==",
       "engines": {
         "node": ">=4"
       }
@@ -20,9 +20,9 @@
   },
   "dependencies": {
     "axe-core": {
-      "version": "4.9.0",
-      "resolved": "https://registry.npmjs.org/axe-core/-/axe-core-4.9.0.tgz",
-      "integrity": "sha512-H5orY+M2Fr56DWmMFpMrq5Ge93qjNdPVqzBv5gWK3aD1OvjBEJlEzxf09z93dGVQeI0LiW+aCMIx1QtShC/zUw=="
+      "version": "4.9.1",
+      "resolved": "https://registry.npmjs.org/axe-core/-/axe-core-4.9.1.tgz",
+      "integrity": "sha512-QbUdXJVTpvUTHU7871ppZkdOLBeGUKBQWHkHrvN2V9IQWGMt61zf3B45BtzjxEJzYuj0JBjBZP/hmYS/R9pmAw=="
     }
   }
 }
diff --git a/packages/commons/src/package.json b/packages/commons/src/package.json
index 8fe4145..70eb00b 100644
--- a/packages/commons/src/package.json
+++ b/packages/commons/src/package.json
@@ -3,6 +3,6 @@
   "repository": {},
   "license": "MIT",
   "dependencies": {
-    "axe-core": "^4.9.0"
+    "axe-core": "^4.9.1"
   }
 }
diff --git a/packages/playwright/src/Deque.AxeCore.Playwright.csproj b/packages/playwright/src/Deque.AxeCore.Playwright.csproj
index ddb0a54..e6001bc 100644
--- a/packages/playwright/src/Deque.AxeCore.Playwright.csproj
+++ b/packages/playwright/src/Deque.AxeCore.Playwright.csproj
@@ -19,7 +19,7 @@
     <EnableNETAnalyzers>true</EnableNETAnalyzers>
 
     <!-- Do not update this by-hand; updates are automated via the create-release workflow -->
-    <VersionPrefix>4.9.0</VersionPrefix>
+    <VersionPrefix>4.9.1</VersionPrefix>
     <VersionSuffix>development</VersionSuffix>
   </PropertyGroup>
 
diff --git a/packages/selenium/src/Deque.AxeCore.Selenium.csproj b/packages/selenium/src/Deque.AxeCore.Selenium.csproj
index c01492f..e693661 100644
--- a/packages/selenium/src/Deque.AxeCore.Selenium.csproj
+++ b/packages/selenium/src/Deque.AxeCore.Selenium.csproj
@@ -19,7 +19,7 @@
     <EnableNETAnalyzers>true</EnableNETAnalyzers>
 
     <!-- Do not update this by-hand; updates are automated via the create-release workflow -->
-    <VersionPrefix>4.9.0</VersionPrefix>
+    <VersionPrefix>4.9.1</VersionPrefix>
     <VersionSuffix>development</VersionSuffix>
   </PropertyGroup>