diff --git a/AGENTS.md b/AGENTS.md
index 9daa9861..a2247d35 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -23,7 +23,7 @@ xcodebuild -project RxCode.xcodeproj -scheme RxCode -configuration Debug build
 xcodebuild -project RxCode.xcodeproj -scheme RxCode -configuration Release build
 ```
 
-- Minimum deployment target: macOS 15.0+
+- Minimum deployment target: macOS 26.0+
 - No test suite (UI app)
 - Bundle ID: `com.idealapp.RxCode`
 - External dependencies: SwiftTerm (terminal emulation), Sparkle (auto-update)
diff --git a/CLAUDE.md b/CLAUDE.md
index a15cfee1..8880918c 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -23,7 +23,7 @@ xcodebuild -project RxCode.xcodeproj -scheme RxCode -configuration Debug build
 xcodebuild -project RxCode.xcodeproj -scheme RxCode -configuration Release build
 ```
 
-- Minimum deployment target: macOS 15.0+
+- Minimum deployment target: macOS 26.0+
 - No test suite (UI app)
 - Bundle ID: `com.idealapp.RxCode`
 - External dependencies: SwiftTerm (terminal emulation), Sparkle (auto-update)
diff --git a/README.md b/README.md
index dad81f91..15ee75e2 100644
--- a/README.md
+++ b/README.md
@@ -84,7 +84,7 @@ Same agents, no terminal required.
 
 ## Requirements
 
-- **macOS 15.0** or later
+- **macOS 26.0** or later
 - At least one supported agent runtime installed and authenticated:
   - **[Claude Code CLI](https://docs.anthropic.com/en/docs/claude-code)**
   - **Codex CLI**
@@ -99,9 +99,9 @@ Same agents, no terminal required.
 2. Unzip and move `RxCode.app` to your `Applications` folder.
 3. Launch `RxCode.app`.
 
-### First Launch on macOS 15 (Sequoia)
+### First Launch on macOS 26
 
-macOS Sequoia blocks the first launch of any downloaded app, even notarized ones, and routes approval through System Settings instead of the old right-click -> Open flow.
+macOS 26 blocks the first launch of any downloaded app, even notarized ones, and routes approval through System Settings instead of the old right-click -> Open flow.
 
 When you see **"Apple could not verify 'RxCode.app' is free of malware..."**:
 
diff --git a/RxCode.xcodeproj/project.pbxproj b/RxCode.xcodeproj/project.pbxproj
index ca95b1bc..ecb46a96 100644
--- a/RxCode.xcodeproj/project.pbxproj
+++ b/RxCode.xcodeproj/project.pbxproj
@@ -448,7 +448,7 @@
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				LOCALIZATION_PREFERS_STRING_CATALOGS = YES;
-				MACOSX_DEPLOYMENT_TARGET = 15.0;
+				MACOSX_DEPLOYMENT_TARGET = 26.0;
 				MTL_ENABLE_DEBUG_INFO = INCLUDE_SOURCE;
 				MTL_FAST_MATH = YES;
 				ONLY_ACTIVE_ARCH = YES;
@@ -506,7 +506,7 @@
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				LOCALIZATION_PREFERS_STRING_CATALOGS = YES;
-				MACOSX_DEPLOYMENT_TARGET = 15.0;
+				MACOSX_DEPLOYMENT_TARGET = 26.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				MTL_FAST_MATH = YES;
 				SDKROOT = macosx;
diff --git a/scripts/ci/generate-appcast.sh b/scripts/ci/generate-appcast.sh
index 9d0473c4..f0e4832e 100755
--- a/scripts/ci/generate-appcast.sh
+++ b/scripts/ci/generate-appcast.sh
@@ -7,7 +7,7 @@ set -euo pipefail
 
 RELEASES_URL="https://github.com/rxtech-lab/rxcode/releases"
 DOWNLOAD_URL_PREFIX="${RELEASES_URL}/download/${VERSION}/"
-EXPECTED_MINIMUM_SYSTEM_VERSION="${EXPECTED_MINIMUM_SYSTEM_VERSION:-15.0}"
+EXPECTED_MINIMUM_SYSTEM_VERSION="${EXPECTED_MINIMUM_SYSTEM_VERSION:-26.0}"
 
 # Write SPARKLE_KEY to sparkle.key
 echo "$SPARKLE_KEY" > sparkle.key
diff --git a/website/app/page.tsx b/website/app/page.tsx
index 3533e78d..faf71f20 100644
--- a/website/app/page.tsx
+++ b/website/app/page.tsx
@@ -221,7 +221,7 @@ function Hero({
         </div>
 
         <p className="mt-6 text-xs text-on-surface-variant/70 font-mono uppercase tracking-widest">
-          macOS 15+ · Apple Silicon &amp; Intel
+          macOS 26+ · Apple Silicon
         </p>
       </div>
     </section>