diff --git a/packages/hawtio/jest.config.ts b/packages/hawtio/jest.config.ts
index d9d79a75..a38e5b72 100644
--- a/packages/hawtio/jest.config.ts
+++ b/packages/hawtio/jest.config.ts
@@ -15,6 +15,7 @@ const config: Config = {
     '\\.(css|less)$': '<rootDir>/src/__mocks__/styleMock.js',
     '@hawtiosrc/(.*)': '<rootDir>/src/$1',
     'react-markdown': '<rootDir>/../../node_modules/react-markdown/react-markdown.min.js',
+    'keycloak-js': path.resolve(__dirname, './src/__mocks__/keycloak.js'),
     'monaco-editor': path.resolve(__dirname, './src/__mocks__/monacoEditor.js'),
     '@monaco-editor/react': path.resolve(__dirname, './src/__mocks__/monacoEditor.js'),
     '@patternfly/react-code-editor': path.resolve(__dirname, './src/__mocks__/codeEditorMock.js'),
diff --git a/packages/hawtio/package.json b/packages/hawtio/package.json
index 67d16abd..dd380b74 100644
--- a/packages/hawtio/package.json
+++ b/packages/hawtio/package.json
@@ -61,7 +61,7 @@
     "jquery": "^3.7.1",
     "js-logger": "^1.6.1",
     "jwt-decode": "^4.0.0",
-    "keycloak-js": "^23.0.7",
+    "keycloak-js": "^26.0.6",
     "monaco-editor": "^0.52.0",
     "oauth4webapi": "^2.17.0",
     "react": "^18.3.1",
diff --git a/packages/hawtio/src/__mocks__/keycloak.js b/packages/hawtio/src/__mocks__/keycloak.js
new file mode 100644
index 00000000..c3769a17
--- /dev/null
+++ b/packages/hawtio/src/__mocks__/keycloak.js
@@ -0,0 +1,3 @@
+module.exports = {
+  Keycloak: () => {},
+}
diff --git a/packages/hawtio/src/plugins/auth/keycloak/keycloak-service.ts b/packages/hawtio/src/plugins/auth/keycloak/keycloak-service.ts
index 0b451cb8..37eaff23 100644
--- a/packages/hawtio/src/plugins/auth/keycloak/keycloak-service.ts
+++ b/packages/hawtio/src/plugins/auth/keycloak/keycloak-service.ts
@@ -242,7 +242,7 @@ class KeycloakService implements IKeycloakService {
 
     keycloak
       .updateToken(KEYCLOAK_TOKEN_MINIMUM_VALIDITY)
-      .then(refreshed => {
+      .then((refreshed: boolean) => {
         if (refreshed) {
           const token = keycloak.token
           if (token) {
@@ -252,7 +252,7 @@ class KeycloakService implements IKeycloakService {
           log.debug('Token is still valid')
         }
       })
-      .catch(reason => {
+      .catch((reason: Error) => {
         log.error("Couldn't update token:", reason)
         errorFn?.()
       })
diff --git a/packages/hawtio/tsconfig.json b/packages/hawtio/tsconfig.json
index 1440b66c..63068776 100644
--- a/packages/hawtio/tsconfig.json
+++ b/packages/hawtio/tsconfig.json
@@ -16,7 +16,7 @@
     "noImplicitThis": true,
     "noUncheckedIndexedAccess": true,
     "module": "esnext",
-    "moduleResolution": "node",
+    "moduleResolution": "bundler",
     "resolveJsonModule": true,
     "isolatedModules": true,
     "noEmit": true,
diff --git a/yarn.lock b/yarn.lock
index 2f48b289..a23ae45f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2051,7 +2051,7 @@ __metadata:
     jquery: "npm:^3.7.1"
     js-logger: "npm:^1.6.1"
     jwt-decode: "npm:^4.0.0"
-    keycloak-js: "npm:^23.0.7"
+    keycloak-js: "npm:^26.0.6"
     monaco-editor: "npm:^0.52.0"
     oauth4webapi: "npm:^2.17.0"
     react: "npm:^18.3.1"
@@ -5169,7 +5169,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"base64-js@npm:^1.3.1, base64-js@npm:^1.5.1":
+"base64-js@npm:^1.3.1":
   version: 1.5.1
   resolution: "base64-js@npm:1.5.1"
   checksum: 10/669632eb3745404c2f822a18fc3a0122d2f9a7a13f7fb8b5823ee19d1d2ff9ee5b52c53367176ea4ad093c332fd5ab4bd0ebae5a8e27917a4105a4cfc86b1005
@@ -10238,13 +10238,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"js-sha256@npm:^0.10.1":
-  version: 0.10.1
-  resolution: "js-sha256@npm:0.10.1"
-  checksum: 10/6bae235dd458744e573876cc0875e21ea18a84e3aec4ba82d0efdb28537366e225304d93072789883500ca995fcc7c4500528c66d02da88cc5d6ab4554ce2b8c
-  languageName: node
-  linkType: hard
-
 "js-tokens@npm:^3.0.0 || ^4.0.0, js-tokens@npm:^4.0.0":
   version: 4.0.0
   resolution: "js-tokens@npm:4.0.0"
@@ -10465,14 +10458,10 @@ __metadata:
   languageName: node
   linkType: hard
 
-"keycloak-js@npm:^23.0.7":
-  version: 23.0.7
-  resolution: "keycloak-js@npm:23.0.7"
-  dependencies:
-    base64-js: "npm:^1.5.1"
-    js-sha256: "npm:^0.10.1"
-    jwt-decode: "npm:^4.0.0"
-  checksum: 10/61c127a9ac4954d1d0f7f1eee2348043322e21ec956f1ac7819bced39ce1360470cbbb5bd6f81ac1ee59a6fecc1cc5c2667f4e4f249c9c9b86a747a3654efb97
+"keycloak-js@npm:^26.0.6":
+  version: 26.0.6
+  resolution: "keycloak-js@npm:26.0.6"
+  checksum: 10/f4cd1a46f379f38bd426076ab40625602226d8fc8565857d44d97bd408a2604864e567e129526ffe9a4be3bab2955d496aa5f09cda9c59e7eaf5e65eb95de197
   languageName: node
   linkType: hard