diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7ad300d..c5fbb25 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 ## [Unreleased]
 
+## 0.4.5
+
+### Changes
+- tested and marked for compartibility with NC18 @quest
+
 ## 0.4.4
 
 ### Changes
diff --git a/appinfo/info.xml b/appinfo/info.xml
index 32b8e21..330e21b 100644
--- a/appinfo/info.xml
+++ b/appinfo/info.xml
@@ -2,7 +2,7 @@
 <info xmlns:xsi= "http://www.w3.org/2001/XMLSchema-instance"
 		xsi:noNamespaceSchemaLocation="https://apps.nextcloud.com/schema/apps/info.xsd">
 	<id>user_ispconfig</id>
-	<version>0.4.4</version>
+	<version>0.4.5</version>
 	<name>User support for ISPConfig mail accounts</name>
 	<summary>Allow users logging in using their mailbox credentials as managed via ISPConfig</summary>
 	<description lang="en"><![CDATA[Using this authentication provider you allow your users to use login credentials from their mailboxes as managed by ISPConfig 3 hosting controlpanel.
@@ -40,7 +40,7 @@ Benötigt SOAP PHP Extension installiert und aktiviert und einen ISPConfig Remot
 	<website>https://spicyhub.de/spicy-web/nextcloud-user-ispconfig</website>
 	<repository type="git">https://spicyhub.de/spicy-web/nextcloud-user-ispconfig.git</repository>
 	<dependencies>
-		<nextcloud min-version="17" max-version="17" />
+		<nextcloud min-version="17" max-version="18" />
 		<lib>soap</lib>
 	</dependencies>
 	<types>
diff --git a/appinfo/signature.json b/appinfo/signature.json
index e4fd021..fe2c0d4 100644
--- a/appinfo/signature.json
+++ b/appinfo/signature.json
@@ -1,16 +1,16 @@
 {
     "hashes": {
-        "CHANGELOG.md": "1b42fa409c58afd9c77dd9e48130130b423db0b2569139bba5181d44f4b5d75449447ed602538a3c9a0ab8298d34cf1710a673f5c852fad811cb3a62f17b6060",
+        "CHANGELOG.md": "07572d2b421aafb3edcab151f61ebeeb9b68ebbc3d3428b253e68f113b8a55a9dff607f3812aefd08dfa6cfa0eb1bccde11fec886cc87c887ebd904396db9a45",
         "README.md": "2248dbbdef0be39dfe26c9ed0b702e82ae4f067dda352287a6eee02fad44b86d85aa97f7aed1247438df25afcac593b6d4107248298554085ac1322cc7266739",
         "appinfo\/app.php": "9bbe835e5f69d548aa65acbb31e3b643e488b10bd2ed779e429f16436627115d5f0e0a22bb9e4a2d8e595c5c47924e7e20c4e036c0e77cdaac908c8efb783da0",
         "appinfo\/database.xml": "d4e0967b2bb36278fe8f0397252d85fcdba6ba2ebcc2443e211647f2ec3c793cc9e4dffe19fa9265eb7b453491b93f02645e7912b1d39021137d98e6cd994424",
-        "appinfo\/info.xml": "746ec0a8feb511265833ab3d547549863bd4f6bc35272fb96d1fa79407af37f0201c9041624856c37dd153637da831f5d4314d8b6f5a2679daa7e9b7cc55fc6d",
+        "appinfo\/info.xml": "7ecd35241956775e6f079ab818fb687fb78dff67d867effefd1f3b572227bb926933efbb9b85372c13bccaad4edfdefb318e8c741d3307a33afcc4f9b4ea2231",
         "img\/app.svg": "56779976ca8f637db4de8fcbace2aa8da3a7ab0e1c3b1d44a1fe68e20458b157e232947a499c34b5a6416fc6d0b24889e9153894afa47faacec985990bc406cf",
         "lib\/base.php": "afc1f5e2eb6b0e3ba26fb1370ab645eb5fd262ee516932009559f32527f9f15c89c9e41fdfa0b3e8f52a8deece7b097b1918b0717ff67afb1a7fded272b1eb4d",
         "lib\/ispconfig_soap.php": "a5e51038ea143f8fe5a00a68c77fb199ad257faaf7ca4117d5ef63dde71a0f0661e83084eb3cacc1b1b49eb7eef4024462cbeaeff063ef197887358f853f2736",
         "lib\/ispdomainuser.php": "f5ec54a401373b5ec0de5d6d6088aa7f5b9e148de5f44b9b5698d775ebfc7693bf4b7cc7bc442dffee5449fcd3f6498562aad35f3e35984e29d813dc7811c17a",
         "lib\/user_ispconfig.php": "0d26c5bc4e3afc9bef007ed23e3a10b51bf015c1db6c5eb75dd622759efa066897c53892e866d65723d1d4775072510bece9257e0d55605b4c51e99163d78824"
     },
-    "signature": "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",
+    "signature": "aqrzepPXxyHFVPYRDNgTYCq6Wkl31Xw8NL\/bfo4zmTd55RHdJUlUsOtQrFwkby2ShyUHomfHHYG4bKJ+DZ97qBaJ1VqaNbdkLn1KY5VuTXLhCKKJQC60daSHcB7ZlU\/W9t9VMigW4z38JHnWLNSiTOFyYX3xX6rc3lBHMzrQmDOgt+HkJaGHhx4h+fbtAouvga31QpXQ3QQDKFhvEiq7GySMC9+\/+2woE5Z1o4di6z621Ixp3ly418EN+WX8tl9AcUNs+uG7McL\/sN0jMR3MBuPHu2Z+ZwqtDzL7KVjOU7mzlYK1RUqaNWlLzQmrZce6qhSxi3zcsn6p+gpy5QQRRw6tSfCf7cdDorOA4WahhiE8Q0OJFWGKTdtck23gd\/Z9QP8SaQEUT53I104JixF504TxgYx4FbMR0bWEbL5rmqXlsY\/anI1nsm0JFGy0Hm4gcSL6stWh\/a4drqT0YGugEiWoqijZ5m+yD6r5eywD1hNL+09GkmXB+X28xlVLcUF7qLRM69PcetJ2fU4Hpghqn4IS7OI0xsu4GknZB2XlqL9O8vyoN2T82Biz5oo1upXisaYbbDCEEyNk+7mGZ8Pi5Z2fkp1vY4F1h60E0VpLVURG5NMOCuKU0xdYCTBWPjHABMGn\/PPtiEV3XsSoCpH4d7MtglOraFZWX\/10OjphJVQ=",
     "certificate": "-----BEGIN CERTIFICATE-----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\r\n2JpqZT483hHxcjNbFRY6rZClB0rsbIoVDKcGkHI=\r\n-----END CERTIFICATE-----"
 }
\ No newline at end of file