diff --git a/app/javascript/images/logo.svg b/app/javascript/images/logo.svg
index 034a9c221..82a6025a7 100644
--- a/app/javascript/images/logo.svg
+++ b/app/javascript/images/logo.svg
@@ -1 +1,17 @@
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+<svg version="1.1" id="レイヤー_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px"
+	 y="0px" viewBox="0 0 216.4 232" style="enable-background:new 0 0 216.4 232;" xml:space="preserve">
+<style type="text/css">
+	.st0{fill:#92787D;}
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diff --git a/app/javascript/images/logo_alt.svg b/app/javascript/images/logo_alt.svg
index 102d4c787..4c04c93b8 100644
--- a/app/javascript/images/logo_alt.svg
+++ b/app/javascript/images/logo_alt.svg
@@ -1 +1,16 @@
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+<?xml version="1.0" encoding="utf-8"?>
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+<svg version="1.1" id="レイヤー_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px"
+	 y="0px" viewBox="0 0 216.4 232" style="enable-background:new 0 0 216.4 232;" xml:space="preserve">
+<style type="text/css">
+	.st0{fill:#92787D;}
+	.st1{fill:#FFFFFF;}
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diff --git a/public/android-chrome-192x192.png b/public/android-chrome-192x192.png
index 7a99a1964..1aa62f0c3 100644
Binary files a/public/android-chrome-192x192.png and b/public/android-chrome-192x192.png differ
diff --git a/public/apple-touch-icon.png b/public/apple-touch-icon.png
index b12aa55a3..b584148ce 100644
Binary files a/public/apple-touch-icon.png and b/public/apple-touch-icon.png differ