diff --git a/CLAUDE.md b/CLAUDE.md
index 9f61341..161a51f 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -113,7 +113,7 @@ Before publishing:
 
 ## Known Limitations
 
-1. **Python required**: npm package needs Python 3.10+ on user's system
+1. **Python required**: npm package needs Python 3.9+ on user's system
 2. **Gemini OAuth**: Must have Gemini CLI installed for token refresh
 3. **Z.AI**: 5h shared quota across GLM-4.7, GLM-4.6, GLM-4.5V, GLM-4.5, GLM-4.5-Air, and Visual Analysis
 4. **Codex API key mode**: No quota info (only OAuth has it)
diff --git a/README.md b/README.md
index d95e798..511a5da 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,7 @@ npm install -g cclimits
 cclimits
 ```
 
-**Requires**: Python 3.10+ installed on your system.
+**Requires**: Python 3.9+ installed on your system.
 
 ### Via Git
 
@@ -209,7 +209,7 @@ export GEMINI_OAUTH_CLIENT_SECRET="..."
 
 ## Requirements
 
-- Python 3.10+
+- Python 3.9+
 - `requests` library (optional, falls back to urllib)
 
 ## License
diff --git a/bin/cclimits.js b/bin/cclimits.js
index da3f3ff..96b05c2 100755
--- a/bin/cclimits.js
+++ b/bin/cclimits.js
@@ -10,7 +10,7 @@ const child = spawn('python3', [script, ...process.argv.slice(2)], {
 
 child.on('error', (err) => {
   if (err.code === 'ENOENT') {
-    console.error('Error: python3 not found. Please install Python 3.10+');
+    console.error('Error: python3 not found. Please install Python 3.9+');
     process.exit(1);
   }
   throw err;
diff --git a/lib/cclimits.py b/lib/cclimits.py
index 79f7a0b..6ddeb7a 100755
--- a/lib/cclimits.py
+++ b/lib/cclimits.py
@@ -4,6 +4,7 @@
 Fetches remaining quota/usage for Claude Code, Codex, Gemini, and Z.AI
 """
 
+from __future__ import annotations
 import json
 import os
 import subprocess
diff --git a/memory-bank/projectbrief.md b/memory-bank/projectbrief.md
index c57b816..70df96e 100644
--- a/memory-bank/projectbrief.md
+++ b/memory-bank/projectbrief.md
@@ -24,7 +24,7 @@
 
 ### Non-Functional
 - No external dependencies required (urllib fallback)
-- Python 3.10+ compatible
+- Python 3.9+ compatible
 - Fast execution (<5s for all tools)
 - Graceful degradation if tools unavailable
 
diff --git a/memory-bank/techContext.md b/memory-bank/techContext.md
index c288b92..571b9dc 100644
--- a/memory-bank/techContext.md
+++ b/memory-bank/techContext.md
@@ -4,7 +4,7 @@
 
 | Component | Technology |
 |-----------|------------|
-| Core Script | Python 3.10+ |
+| Core Script | Python 3.9+ |
 | npm Wrapper | Node.js 16+ |
 | HTTP Client | requests (optional), urllib (fallback) |
 | Distribution | npm, GitHub |
@@ -26,7 +26,7 @@ cclimits/
 ## Dependencies
 
 ### Runtime
-- **Python 3.10+**: Required (type hints, match statements)
+- **Python 3.9+**: Required (type hints deferred with __future__)
 - **requests**: Optional (improves HTTP handling)
 - **Node.js 16+**: Required for npx distribution