diff --git a/INSTALL.md b/INSTALL.md
index d32406c8..b40d8b67 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -216,7 +216,7 @@ Only 64-bit MSVC build can be compiled.
 
 **Set up**
 
-- macOS minimum version 10.13
+- macOS minimum version 10.15
 - install python3
 - download xcode
 - install Qt 6.2
diff --git a/resources/Info.plist b/resources/Info.plist
index d58f6a63..19dec665 100644
--- a/resources/Info.plist
+++ b/resources/Info.plist
@@ -17,7 +17,7 @@
 	<key>CFBundleShortVersionString</key>
 	<string>${MACOSX_BUNDLE_SHORT_VERSION_STRING}</string>
 	<key>LSMinimumSystemVersion</key>
-	<string>10.14</string>
+	<string>10.15</string>
 	<key>CFBundleVersion</key>
 	<string>${MACOSX_BUNDLE_BUNDLE_VERSION}</string>
 	<key>LSApplicationCategoryType</key>
diff --git a/sparkle/sparkle-xml-updater.sh b/sparkle/sparkle-xml-updater.sh
index de6c1752..ddfd2221 100755
--- a/sparkle/sparkle-xml-updater.sh
+++ b/sparkle/sparkle-xml-updater.sh
@@ -36,7 +36,7 @@ cat << EOFILE > ${REPO_FOLDER}/${SPARKLE_FILE}
             <pubDate>$DATE_RFC2822</pubDate>
             <sparkle:version>${BUILD}</sparkle:version>
             <sparkle:shortVersionString>${VERSION}</sparkle:shortVersionString>
-            <sparkle:minimumSystemVersion>10.14.0</sparkle:minimumSystemVersion>
+            <sparkle:minimumSystemVersion>10.15.0</sparkle:minimumSystemVersion>
             <enclosure url="${REPO_URL}/$(basename ${PACKAGE})" length="$PACKAGE_SIZE" type="application/octet-stream" sparkle:dsaSignature="$(./sign_update.sh ${PACKAGE} ${DSA_KEY})" />
         </item>
 $(echo -e "${ITEMS}")
diff --git a/src/libclient/containerview.h b/src/libclient/containerview.h
index b3e31d97..5cfc4604 100644
--- a/src/libclient/containerview.h
+++ b/src/libclient/containerview.h
@@ -266,14 +266,7 @@ private:
 
     // Hard unbox and unwrap underlying data container.
     const BaseType& data() {
-        //this fix error when build for macOS 10.13(error: 'value' is unavailable: introduced in macOS 10.14)
-    #ifdef __APPLE__
-        if(!data_.has_value())
-           throw std::logic_error("bad optional access");
-        return *data_;
-    #else
         return data_.value().get();
-    #endif
     }
 
     // Actually filter the view.