diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7de8f808e..39fadeb9d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+- Improved the language localization for German (`de`)
 - Upgraded `stripe` from version `22.2.3` to `22.3.2`
 
 ## 3.28.0 - 2026-07-17
diff --git a/apps/client/src/locales/messages.de.xlf b/apps/client/src/locales/messages.de.xlf
index c8fe18ace..a44212669 100644
--- a/apps/client/src/locales/messages.de.xlf
+++ b/apps/client/src/locales/messages.de.xlf
@@ -4527,7 +4527,7 @@
       </trans-unit>
       <trans-unit id="5761400233881592893" datatype="html">
         <source>Update Activity</source>
-        <target state="new">Update Activity</target>
+        <target state="translated">Aktivität bearbeiten</target>
         <context-group purpose="location">
           <context context-type="sourcefile">libs/common/src/lib/routes/routes.ts</context>
           <context context-type="linenumber">146</context>
@@ -5407,7 +5407,7 @@
       </trans-unit>
       <trans-unit id="2375397722199009140" datatype="html">
         <source>Add Activity</source>
-        <target state="new">Add Activity</target>
+        <target state="translated">Aktivität hinzufügen</target>
         <context-group purpose="location">
           <context context-type="sourcefile">libs/common/src/lib/routes/routes.ts</context>
           <context context-type="linenumber">139</context>
@@ -6698,7 +6698,7 @@
       </trans-unit>
       <trans-unit id="570056762949632344" datatype="html">
         <source>Clone Activity</source>
-        <target state="new">Clone Activity</target>
+        <target state="translated">Aktivität kopieren</target>
         <context-group purpose="location">
           <context context-type="sourcefile">libs/common/src/lib/routes/routes.ts</context>
           <context context-type="linenumber">134</context>