diff --git a/README.md b/README.md
index ef20d6cd3..18e660a9a 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 [Mozc - a Japanese Input Method Editor designed for multi-platform](https://github.com/google/mozc)
 ===================================
 
-Copyright 2010-2024 Google LLC
+Copyright 2010-2025 Google LLC
 
 Mozc is a Japanese Input Method Editor (IME) designed for multi-platform such as
 Android OS, Apple macOS, Chromium OS, GNU/Linux and Microsoft Windows.  This
diff --git a/src/build_tools/mozc_win32_resource_template.rc b/src/build_tools/mozc_win32_resource_template.rc
index 8afa5d7b6..d45c1aa6b 100644
--- a/src/build_tools/mozc_win32_resource_template.rc
+++ b/src/build_tools/mozc_win32_resource_template.rc
@@ -17,9 +17,9 @@
 #endif
 #ifndef MOZC_RES_LEGAL_COPYRIGHT
   #if defined(GOOGLE_JAPANESE_INPUT_BUILD)
-    #define MOZC_RES_LEGAL_COPYRIGHT "Copyright 2024 Google LLC. All Rights Reserved."
+    #define MOZC_RES_LEGAL_COPYRIGHT "Copyright 2025 Google LLC. All Rights Reserved."
   #elif defined(MOZC_BUILD)
-    #define MOZC_RES_LEGAL_COPYRIGHT "Copyright 2024 Google LLC. All Rights Reserved."
+    #define MOZC_RES_LEGAL_COPYRIGHT "Copyright 2025 Google LLC. All Rights Reserved."
   #endif
 #endif
 #ifndef MOZC_RES_ORIGINAL_FILENAME
diff --git a/src/data/installer/credits_en.html b/src/data/installer/credits_en.html
index c8de73f9f..d58c5c1dc 100644
--- a/src/data/installer/credits_en.html
+++ b/src/data/installer/credits_en.html
@@ -64,7 +64,7 @@ body {
 <div class="licence">
 <h3>Mozc is licensed as follows:</h3>
 <pre>
-Copyright 2010-2024 Google LLC
+Copyright 2010-2025 Google LLC
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/src/data/mac/ConfigDialog/English.lproj/InfoPlist.strings b/src/data/mac/ConfigDialog/English.lproj/InfoPlist.strings
index 35d431ea5..a2cd59073 100644
--- a/src/data/mac/ConfigDialog/English.lproj/InfoPlist.strings
+++ b/src/data/mac/ConfigDialog/English.lproj/InfoPlist.strings
@@ -1,4 +1,4 @@
 /* Localized versions of Info.plist keys */
 
 CFBundleName = "${CF_BUNDLE_NAME_EN} Preferences";
-NSHumanReadableCopyright = "Copyright 2024 Google LLC";
+NSHumanReadableCopyright = "Copyright 2025 Google LLC";
diff --git a/src/data/mac/ConfigDialog/Japanese.lproj/InfoPlist.strings b/src/data/mac/ConfigDialog/Japanese.lproj/InfoPlist.strings
index fee1cf027..d76cf2c74 100644
--- a/src/data/mac/ConfigDialog/Japanese.lproj/InfoPlist.strings
+++ b/src/data/mac/ConfigDialog/Japanese.lproj/InfoPlist.strings
@@ -1,4 +1,4 @@
 /* Localized versions of Info.plist keys */
 
 CFBundleName = "${CF_BUNDLE_NAME_JA} 環境設定";
-NSHumanReadableCopyright = "Copyright 2024 Google LLC";
+NSHumanReadableCopyright = "Copyright 2025 Google LLC";
diff --git a/src/data/mac/DictionaryTool/English.lproj/InfoPlist.strings b/src/data/mac/DictionaryTool/English.lproj/InfoPlist.strings
index e7921c5c2..98d707d65 100644
--- a/src/data/mac/DictionaryTool/English.lproj/InfoPlist.strings
+++ b/src/data/mac/DictionaryTool/English.lproj/InfoPlist.strings
@@ -1,4 +1,4 @@
 /* Localized versions of Info.plist keys */
 
 CFBundleName = "Dictionary Tool";
-NSHumanReadableCopyright = "Copyright 2024 Google LLC";
+NSHumanReadableCopyright = "Copyright 2025 Google LLC";
diff --git a/src/data/mac/DictionaryTool/Japanese.lproj/InfoPlist.strings b/src/data/mac/DictionaryTool/Japanese.lproj/InfoPlist.strings
index 1aaeb2519..e9f230483 100644
--- a/src/data/mac/DictionaryTool/Japanese.lproj/InfoPlist.strings
+++ b/src/data/mac/DictionaryTool/Japanese.lproj/InfoPlist.strings
@@ -1,4 +1,4 @@
 /* Localized versions of Info.plist keys */
 
 CFBundleName = "辞書ツール";
-NSHumanReadableCopyright = "Copyright 2024 Google LLC";
+NSHumanReadableCopyright = "Copyright 2025 Google LLC";
diff --git a/src/gui/about_dialog/about_dialog.ui b/src/gui/about_dialog/about_dialog.ui
index 2e8e737b0..f8599fe17 100644
--- a/src/gui/about_dialog/about_dialog.ui
+++ b/src/gui/about_dialog/about_dialog.ui
@@ -108,7 +108,7 @@
         </font>
        </property>
        <property name="text">
-        <string>Copyright 2024 Google LLC. All rights reserved.</string>
+        <string>Copyright 2025 Google LLC. All rights reserved.</string>
        </property>
        <property name="alignment">
         <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
diff --git a/src/gui/about_dialog/about_dialog_en.qtts b/src/gui/about_dialog/about_dialog_en.qtts
index 6c812feee..d135165a2 100644
--- a/src/gui/about_dialog/about_dialog_en.qtts
+++ b/src/gui/about_dialog/about_dialog_en.qtts
@@ -15,7 +15,7 @@
     </message>
     <message utf8="true">
         <location filename="about_dialog.ui" line="80"/>
-        <source>Copyright 2024 Google LLC. All rights reserved.</source>
+        <source>Copyright 2025 Google LLC. All rights reserved.</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
diff --git a/src/gui/about_dialog/about_dialog_ja.qtts b/src/gui/about_dialog/about_dialog_ja.qtts
index d0c62c4f3..987b1b2eb 100644
--- a/src/gui/about_dialog/about_dialog_ja.qtts
+++ b/src/gui/about_dialog/about_dialog_ja.qtts
@@ -15,7 +15,7 @@
     </message>
     <message utf8="true">
         <location filename="about_dialog.ui" line="80"/>
-        <source>Copyright 2024 Google LLC. All rights reserved.</source>
+        <source>Copyright 2025 Google LLC. All rights reserved.</source>
         <translation type="unfinished"></translation>
     </message>
     <message>