diff --git a/app/src/main/assets/pl-changelog.html b/app/src/main/assets/pl-changelog.html
index 70dd9bea..217e9cd2 100644
--- a/app/src/main/assets/pl-changelog.html
+++ b/app/src/main/assets/pl-changelog.html
@@ -1,6 +1,8 @@
-<h3>Wersja 4.4, 2020-08-27</h3>
+<h3>Wersja 4.4.1, 2020-09-03</h3>
 <ul>
     <li>Poprawione komunikaty o aktualizacjach aplikacji.</li>
+    <li>Mobidziennik: poprawione wyświetlanie przedmiotu w planie lekcji.</li>
+    <li>Mobidziennik: naprawiony moduł frekwencji.</li>
 </ul>
 <br>
 <br>
diff --git a/app/src/main/cpp/szkolny-signing.cpp b/app/src/main/cpp/szkolny-signing.cpp
index a66cabf6..4d19eb33 100644
--- a/app/src/main/cpp/szkolny-signing.cpp
+++ b/app/src/main/cpp/szkolny-signing.cpp
@@ -9,7 +9,7 @@
 
 /*secret password - removed for source code publication*/
 static toys AES_IV[16] = {
-	0x85, 0xd2, 0x0d, 0x9e, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff  };
+	0x72, 0x4b, 0x61, 0x3a, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff  };
 
 unsigned char *agony(unsigned int laugh, unsigned char *box, unsigned char *heat);
 
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/data/api/szkolny/interceptor/Signing.kt b/app/src/main/java/pl/szczodrzynski/edziennik/data/api/szkolny/interceptor/Signing.kt
index 67e8310a..76fc1193 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/data/api/szkolny/interceptor/Signing.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/data/api/szkolny/interceptor/Signing.kt
@@ -46,6 +46,6 @@ object Signing {
 
     /*fun provideKey(param1: String, param2: Long): ByteArray {*/
     fun pleaseStopRightNow(param1: String, param2: Long): ByteArray {
-        return "$param1.MTIzNDU2Nzg5MDSA64wjse===.$param2".sha256()
+        return "$param1.MTIzNDU2Nzg5MDv1BTei5k===.$param2".sha256()
     }
 }
diff --git a/app/src/main/res/values-de/strings.xml b/app/src/main/res/values-de/strings.xml
index 92a260a7..461bdbd3 100644
--- a/app/src/main/res/values-de/strings.xml
+++ b/app/src/main/res/values-de/strings.xml
@@ -854,7 +854,7 @@
     <string name="settings_about_licenses_text">Open-Source-Lizenzen</string>
     <string name="settings_about_privacy_policy_text">Datenschutzrichtlinie</string>
     <string name="settings_about_register_title_text">E-Klassenbuch</string>
-    <string name="settings_about_title_subtext">© Kuba Szczodrzyński &amp;&amp; Kacper Ziubryniewicz\nSeptember 2018 - August 2020</string>
+    <string name="settings_about_title_subtext">© Kuba Szczodrzyński &amp;&amp; Kacper Ziubryniewicz\nSeptember 2018 - 2020</string>
     <string name="settings_about_update_subtext">Klicken Sie hier, um nach Aktualisierungen zu suchen</string>
     <string name="settings_about_update_text">Aktualisierung</string>
     <string name="settings_about_version_text">Version</string>
diff --git a/app/src/main/res/values-en/strings.xml b/app/src/main/res/values-en/strings.xml
index c9cfc0c6..58de31ae 100644
--- a/app/src/main/res/values-en/strings.xml
+++ b/app/src/main/res/values-en/strings.xml
@@ -856,7 +856,7 @@
     <string name="settings_about_licenses_text">Open-source licenses</string>
     <string name="settings_about_privacy_policy_text">Privacy policy</string>
     <string name="settings_about_register_title_text">E-register</string>
-    <string name="settings_about_title_subtext">© Kuba Szczodrzyński &amp;&amp; Kacper Ziubryniewicz\nSeptember 2018 - August 2020</string>
+    <string name="settings_about_title_subtext">© Kuba Szczodrzyński &amp;&amp; Kacper Ziubryniewicz\nSeptember 2018 - 2020</string>
     <string name="settings_about_update_subtext">Click to check for updates</string>
     <string name="settings_about_update_text">Update</string>
     <string name="settings_about_version_text">Version</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index d3f1ba4e..f7536aaf 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -919,7 +919,7 @@
     <string name="settings_about_licenses_text">Licencje open-source</string>
     <string name="settings_about_privacy_policy_text">Polityka prywatności</string>
     <string name="settings_about_register_title_text">E-dziennik</string>
-    <string name="settings_about_title_subtext">© Kuba Szczodrzyński &amp;&amp; Kacper Ziubryniewicz\nwrzesień 2018 - sierpień 2020</string>
+    <string name="settings_about_title_subtext">© Kuba Szczodrzyński &amp;&amp; Kacper Ziubryniewicz\nwrzesień 2018 - 2020</string>
     <string name="settings_about_update_subtext">Kliknij, aby sprawdzić aktualizacje</string>
     <string name="settings_about_update_text">Aktualizacja</string>
     <string name="settings_about_version_text">Wersja</string>
diff --git a/build.gradle b/build.gradle
index ddc5183a..1f63c6ba 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,8 +5,8 @@ buildscript {
         kotlin_version = '1.3.61'
 
         release = [
-                versionName: "4.4",
-                versionCode: 4040099
+                versionName: "4.4.1",
+                versionCode: 4040199
         ]
 
         setup = [