diff --git a/.travis.yml b/.travis.yml
index 4be63a0..d61f8c0 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -41,6 +41,8 @@ matrix:
       env: DB=mysql CORE_BRANCH=stable15
     - php: 7.2
       env: DB=mysql CORE_BRANCH=stable16
+    - php: 7.2
+      env: DB=mysql CORE_BRANCH=stable17
 #    - php: 7.2
 #      env: DB=mysql CORE_BRANCH=master
 #    - php: 7.2
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1b34a2e..a42a04e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # QOwnNotesAPI Change Log
 
+## 19.9.0
+- enabled and tested app for Nextcloud 17
+
 ## 19.4.0
 - enabled and tested app for Nextcloud 16
 
diff --git a/appinfo/info.xml b/appinfo/info.xml
index 26c7d2a..c408d7a 100644
--- a/appinfo/info.xml
+++ b/appinfo/info.xml
@@ -8,7 +8,7 @@
     <description><![CDATA[QOwnNotesAPI is the ownCloud/Nextcloud API for [QOwnNotes](http://www.qownnotes.org), the open source (GPL) notepad for Linux, Mac OS X and Windows, that works together with the notes application of ownCloud / Nextcloud.
 
 The only purpose of this App is to provide API access to your ownCloud/Nextcloud server for your QOwnNotes desktop installation, you cannot use this App for anything else, if you don't have QOwnNotes installed on your desktop computer!]]></description>
-    <version>19.4.0</version>
+    <version>19.9.0</version>
     <licence>agpl</licence>
     <author mail="patrizio@bekerle.com" homepage="http://www.bekerle.com/">Patrizio Bekerle</author>
     <namespace>QOwnNotesAPI</namespace>
@@ -30,6 +30,6 @@ The only purpose of this App is to provide API access to your ownCloud/Nextcloud
     <!-- dependencies -->
     <dependencies>
         <owncloud min-version="8.2" max-version="11" />
-        <nextcloud min-version="10" max-version="16" />
+        <nextcloud min-version="10" max-version="17" />
     </dependencies>
 </info>
diff --git a/appinfo/routes.php b/appinfo/routes.php
index 8133246..6598b4e 100644
--- a/appinfo/routes.php
+++ b/appinfo/routes.php
@@ -11,7 +11,7 @@
 
 namespace OCA\QOwnNotesAPI\AppInfo;
 
-use OCP\API;
+//use OCP\API;
 
 // $application = new Application();
 
diff --git a/appinfo/signature.json b/appinfo/signature.json
index dc9bbfc..0560033 100644
--- a/appinfo/signature.json
+++ b/appinfo/signature.json
@@ -2,18 +2,19 @@
     "hashes": {
         ".codeclimate.yml": "44305278cdce56e606693da0d3940fd26fd95465a26b1fb149c9510c3e66bdc6d16af3765cf3c6f8ca8dd867f8f4c9bfa6f26674b6912b979926a72eb6ab86f7",
         ".editorconfig": "3f6603e83dd948fb07946fd9fee11673c1196a3e3710a6b5dfd2f8861a3cfd49a8abca1273f9678f529d0c2edca9fd3f6d51adc07bcd071f9aa0716075f7e048",
+        ".github\/FUNDING.yml": "d24fe97c3063a0c5848c13c4cb7ee8e3dd9f3c5481ce37f482f7b86dad5437953710cd09423df48e4c7908cd1f1611d831ea7467480bce16e01e215c44371ced",
         ".gitignore": "44b14b22cca5684a14437ee9202f2f857a364bc6f63220aa351cfe185111997fdc46c8d5b19f319955c3857225cd78ca6026203bd829ddff8b6fd450f8d881fa",
-        ".travis.yml": "5daf0cbfc2be31367162620192d64be2cf069dc7572d96a6aa878e90d9f5259772567c77c3895347db6d314f221e260c32c0633c36d74cbb59e257dbae40cce8",
+        ".travis.yml": "c030c07aa956c8fac56a75ded6cc1677e311f31f857a88e4d0caa137a71cd8dd1cc4c0fb1e4bd059b3558fbb13d6bb97c80915ddf08683e872151b27a8d743c8",
         "3rdparty\/finediff\/finediff.php": "328d63a5a24fe36118dfb3c3acd01f7f88c6e89eef1d045270d4edfd3d048b70cb034888494c3cc435863034d72c71b0d6719932e902d962a71f51c376eb1bbd",
         "AUTHORS.md": "471173dfd8ee079c988b04ea7b12a7cab1d82bcc1491f8075b805ead2718fa3578fce4afb334244fb464bbc28b38f5a2b9c1d6403ee6866237832bdf7aca2e17",
-        "CHANGELOG.md": "5ce651fae54bbf08eb6f1983582f4e7e77dfd435a0c68dffb407a15edd2edfc1c4d647dd5bab445fd60e1a79986514354a563bd7afd69e1f3944e0e8a4358d87",
+        "CHANGELOG.md": "75db5cb260a501ea8f096d2f0c4ca674fb18cfa491b7fdfba37e5c5978c2ea9a1f7d925abe1d3703a565b6e4e6362430ae281195a0b89876be32b563526bb29f",
         "COPYING": "6e90d46be391aa645bcf4dfaa67f452cb15a73749f1895633789c7763b43cc0b65d391e5e95652c9a9a2063c956e0e8099a4e1ce4b70b0636629f9eac39c1080",
         "Makefile": "d2f61de81d762aaee5a5876798e702d513eb2ad80cd5e9a62ff256f4b88fb2f7da8876bd74ed7d20f2b95843d1de7c6eba155aaf1f9509029e3ec15b3256999a",
         "README.md": "c2aa234b791495bbcf7e3be06915f35ffabcc50c0d8872aed35fb4674a7e229c665426c7c5abca2e08489114968edee54b31987cc9af2a7c4ebfa4fbf318c07d",
         "appinfo\/app.php": "3dad69fab4e6b4e44ff49b9d20f06ec974e40cd1132b43817e62555737a972b5d95f29b7c59a07c202135da4e273a814f4b70eda4525a51f3609919a1b72711c",
         "appinfo\/application.php": "827097b1ad8f7075534333582d0c8696098a59c26f09219cf0d03194e1559376fa5e210588e80678a2bf9081b918763502ed36757309568abb198cee5a30c1e1",
-        "appinfo\/info.xml": "9388b6b8b7dcf0fc8a6e5c8fda8004027484d37beadaf6ba26cb45ec94f363a057555d2e32ad3d2bbabaa69ef8c1f9d161faaeac4b566a630db4f0326c9de310",
-        "appinfo\/routes.php": "fd68b2f22cd76805e12502a36edcfd1532592df821ff0b582af9bb94d1974cacfe962226d34376285f5b9ad7c61ffaf283e02cdc8aa72b49845f61ecf7cd09fb",
+        "appinfo\/info.xml": "d58d51c743129390d51781ea442bfb4f5801f880b7b08ce49bd659628c366d5e54e3f5fbd52eeecd1ae06ae3db9e4564a33b20eebb32344a4fb62964a25dfa5d",
+        "appinfo\/routes.php": "6abd754018a15bd35ea3d5b5b04c450691c6cb9117e38dbcec2554ea8443b0aa8680824f906a97b2e0ad066c8863d6e44e9d9c40eea5c6830efa90ce64e1ea58",
         "controller\/noteapicontroller.php": "b5f641b2b29f5fe542eb6381ea34e9c1f74112bd2a0b4915bc59429a0b225c1218bc2744570dbc288e860d7cea72863f49b240ebc1a5adc442be55001a105ddd",
         "img\/app.svg": "3518a23d17ef9ff18ea73c96e0f382bb439436ca15383495926563d821e293eec44ce90d397a508b21fde12e40db72022081ffc954e5cd34ed992d3cbeb04171",
         "lib\/capabilities.php": "e4af3b38af530a0165713ce7412013e5414c4446e00313012607d31cb6aadedef65e617cade2645de5d9def7c505f47a55db527b28d9d66f37cccc52133ba358",
@@ -25,6 +26,6 @@
         "tests\/travis\/php.ini": "42ae4f728eb4e0cec696ae48c61d58e50e836b0f291cf74fdc0d7229c565c2bf3c076ac150ce7250dde2e4600804f17404a09555e1978d7e79bb84d39e2c78e1",
         "tests\/unit\/controller\/NoteApiControllerTest.php": "32547a819015a7c446eddc27e232fec28107b3ca5037080f7c31f420756ed19497f89bc1c1e3c47e5d43496c599bed991f8640222216c191d76fc9247f6a84b7"
     },
-    "signature": "iwBH2Won8g3Or\/o4zI5B8P2BDFmbq4tJ5WUvtz1fmgQdzqZoXz5KcZyNzanoHaKVh7YjNSokUqdsqIWZwDt+7PZbP02QkKKWDVXiz7HtLCyN6GJwVTuGw9yJw9M0gInESh5kljVFPBVUpBWL\/u0ZPDJq9n7sdBvKmzKOCFA1\/XDqQBBL8MBPlXTaKNA+58rnImTUcX5SxkrW1VVd5tYUyUAtIps8WE66mZFi3Kxtls33AT\/iOTU4biFCS7Nigudc8wEtz68foT6\/2QdW6qTwBAOZ8xSaZtPUww64OZeo2KzJN3XQ2wXLvQYnx0Giw9TsLRLeRmLENsyMFBxW2a9wxt3E21EnxQxFGZzJr695sW95h1plXlmNEAH14jQoAzYI97aNonG8ke0ydtLg4MoWke+RMuujuGpguOeuCjmAHh4wQgQYUhBGAYxH0XjNuY6j59cvkKGE4l+aJTG6ksZ4kmZbpUCPzP4sY0dURHJXN2p0nrK8qsXVQqtOVVy8zocvC9EqbyHAQJV66LF3OPPETiDvd1xdb9QuyyHNABl5iY4cxde3SC\/hX0+LDR2hum+9v9e6S7bhJBPurpB81TxftY4lx4IHBlihWb3tOeUbMrYwk+9yBY+6QOoK+4ezSEey0jDozSN7UGkgMGv\/s1cX80AWsDpTdctJBX\/i\/hVTgJA=",
+    "signature": "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",
     "certificate": "-----BEGIN CERTIFICATE-----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\r\ntjczm51IDKhbh0z03BT0z10Uiz0AcsvP5SYi\r\n-----END CERTIFICATE-----"
 }
\ No newline at end of file