diff --git a/.github/workflows/nighlty-ci-release-2-branch.yml b/.github/workflows/nighlty-ci-release-2-branch.yml
index 159007a07..e08546fa0 100644
--- a/.github/workflows/nighlty-ci-release-2-branch.yml
+++ b/.github/workflows/nighlty-ci-release-2-branch.yml
@@ -15,4 +15,4 @@ jobs:
     secrets: inherit
     with:
       branch: release/2.11
-      nextcloud_versions: "31 32"
\ No newline at end of file
+      nextcloud_versions: '31 32'
diff --git a/.github/workflows/nighty-ci-release-3-branch.yml b/.github/workflows/nighty-ci-release-3-branch.yml
index 568a1555a..f2ef0b2a5 100644
--- a/.github/workflows/nighty-ci-release-3-branch.yml
+++ b/.github/workflows/nighty-ci-release-3-branch.yml
@@ -15,4 +15,4 @@ jobs:
     secrets: inherit
     with:
       branch: release/3.0
-      nextcloud_versions: "33"
\ No newline at end of file
+      nextcloud_versions: '33 34'
diff --git a/.github/workflows/notify-app-release.yml b/.github/workflows/notify-app-release.yml
index 5399f88e8..99bfbe30c 100644
--- a/.github/workflows/notify-app-release.yml
+++ b/.github/workflows/notify-app-release.yml
@@ -22,5 +22,5 @@ jobs:
           ELEMENT_ROOM_ID: ${{ secrets.ELEMENT_ROOM_ID }}
           NIGHTLY_CI_USER_TOKEN: ${{ secrets.NIGHTLY_CI_USER_TOKEN }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          REPO_NAMES: "server groupfolders oidc user_oidc terms_of_service"
+          REPO_NAMES: 'server groupfolders oidc user_oidc terms_of_service'
         run: ./.github/scripts/notify-nc-and-apps-releases.sh
diff --git a/.github/workflows/shared_workflow.yml b/.github/workflows/shared_workflow.yml
index 9b3d8d7fa..7fa5585ad 100644
--- a/.github/workflows/shared_workflow.yml
+++ b/.github/workflows/shared_workflow.yml
@@ -10,11 +10,11 @@ on:
       nextcloud_versions:
         required: false
         type: string
-        default: "33"
+        default: '33 34'
       php_versions:
         required: false
         type: string
-        default: "8.2 8.3 8.4"
+        default: '8.2 8.3 8.4'
 
 name: CI
 
@@ -66,7 +66,7 @@ jobs:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           lcov-file: ./coverage/jest/lcov.info
           delete-old-comments: true
-          title: "JS Code Coverage"
+          title: 'JS Code Coverage'
 
       - name: JS coverage check
         if: ${{ github.event_name == 'pull_request' }}
@@ -93,9 +93,9 @@ jobs:
         env:
           NEXTCLOUD_VERSIONS: ${{ inputs.nextcloud_versions }}
           PHP_VERSIONS: ${{ inputs.php_versions }}
-          DEFAULT_PHP_VERSION: "8.3"
-          DEFAULT_DATABASE: "mysql"
-          EXTRA_DATABASES: "pgsql"
+          DEFAULT_PHP_VERSION: '8.3'
+          DEFAULT_DATABASE: 'mysql'
+          EXTRA_DATABASES: 'pgsql'
         run: |
           MATRIX=$(./.github/scripts/generate-matrix.sh)
           echo "matrix={\"include\": [$MATRIX]}" >> $GITHUB_OUTPUT
@@ -120,8 +120,8 @@ jobs:
         env:
           SQL: ${{ matrix.database }}
           SERVER_BRANCH: ${{ matrix.nextcloudVersion }}
-          NEXTCLOUD_AUTOINSTALL: "Yes"
-          WITH_REDIS: "YES"
+          NEXTCLOUD_AUTOINSTALL: 'Yes'
+          WITH_REDIS: 'YES'
         ports:
           - 80:80
         options: --name=nextcloud
@@ -248,7 +248,7 @@ jobs:
             # enable app even if it is not compatible with the master branch
             ./occ a:e -f activity oidc user_oidc groupfolders integration_openproject
           else
-            ./occ a:e activity oidc user_oidc groupfolders integration_openproject
+            ./occ a:e -f activity oidc user_oidc groupfolders integration_openproject
             cp -r apps/oidc apps/user_oidc apps/groupfolders ${{ github.workspace }}
           fi
 
@@ -290,7 +290,7 @@ jobs:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           lcov-file: 'integration_openproject/server/apps/integration_openproject/coverage/php/lcov.info'
           delete-old-comments: true
-          title: "PHP Code Coverage"
+          title: 'PHP Code Coverage'
 
       - name: PHP coverage check
         if: ${{ github.event_name == 'pull_request' && matrix.nextcloudVersion == 'stable33'&& matrix.phpVersion == '8.2' }}
@@ -320,7 +320,7 @@ jobs:
             # enable app even if it is not compatible with the master branch
             docker exec nextcloud /bin/bash -c 'occ a:e -f activity oidc user_oidc groupfolders integration_openproject'
           else
-            docker exec nextcloud /bin/bash -c 'occ a:e activity oidc user_oidc groupfolders integration_openproject'
+            docker exec nextcloud /bin/bash -c 'occ a:e -f activity oidc user_oidc groupfolders integration_openproject'
           fi
 
       - name: API Tests
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5770030c7..0e646ee32 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,6 +17,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Added
 
+- Support Nextcloud 34 [#1021](https://github.com/nextcloud/integration_openproject/pull/1021)
+
 ### Changed
 
 ### Removed
diff --git a/appinfo/info.xml b/appinfo/info.xml
index 534e79717..c9cfaaaea 100644
--- a/appinfo/info.xml
+++ b/appinfo/info.xml
@@ -49,7 +49,7 @@ For more information on how to set up and use the OpenProject application, pleas
 	<screenshot>https://github.com/nextcloud/integration_openproject/raw/master/img/screenshot1.png</screenshot>
 	<screenshot>https://github.com/nextcloud/integration_openproject/raw/master/img/screenshot2.png</screenshot>
 	<dependencies>
-		<nextcloud min-version="33" max-version="33" />
+		<nextcloud min-version="33" max-version="34" />
 	</dependencies>
 	<background-jobs>
 		<job>OCA\OpenProject\BackgroundJob\RemoveExpiredDirectUploadTokens</job>
@@ -60,4 +60,4 @@ For more information on how to set up and use the OpenProject application, pleas
 		<personal>OCA\OpenProject\Settings\Personal</personal>
 		<personal-section>OCA\OpenProject\Settings\PersonalSection</personal-section>
 	</settings>
-</info>
+</info>
\ No newline at end of file