diff --git a/CHANGELOG.md b/CHANGELOG.md
index 40862ea..1c9eb3f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 ### ~
 
+### v0.5.6 (2022-12-05)
+* adds support for system dark mode (night mode).
+* fixes bug where Toasts are unreadable (white-on-white); Android 13 (api33+).
+* updates build; gradle wrapper to `gradle-5.0`.
+* updates translation to Norwegian (nb) (#49 by FTno).
+
 ### v0.5.5 (2021-11-15)
 * updates translations to Polish (pl) and Esperanto (eo) (#44 by Verdulo).
 * fixes "app crash when clicking the `Open Calendar` button" (#43).
diff --git a/app/build.gradle b/app/build.gradle
index b9ddfff..f21d032 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -10,8 +10,8 @@ android {
         minSdkVersion 11
         //noinspection ExpiredTargetSdkVersion,OldTargetApi
         targetSdkVersion 25
-        versionCode 15
-        versionName "0.5.5"
+        versionCode 16
+        versionName "0.5.6"
 
         buildConfigField "String", "GIT_HASH", "\"${getGitHash()}\""
 
diff --git a/fastlane/metadata/android/en-US/changelogs/16.txt b/fastlane/metadata/android/en-US/changelogs/16.txt
new file mode 100644
index 0000000..8980b85
--- /dev/null
+++ b/fastlane/metadata/android/en-US/changelogs/16.txt
@@ -0,0 +1 @@
+- updates translation to Norwegian.
\ No newline at end of file