diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1485db1..21b5de5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@ Release notes are generated from this file. Keep changelog entries in English.
 
 ### Improvements
 
+- Increase the default Codex Images request timeout to 600 seconds. (#3)
 - Route Codex OAuth image requests through the Codex Images endpoints instead of the Responses image-generation tool. (#2)
 - Add CLI options for moderation, output compression, edit masks, and end-user identifiers. (#2)
 - Align image size, background, and moderation defaults with the official Images API. (#2)
diff --git a/skills/codex-gpt-image/scripts/codex_gpt_image.py b/skills/codex-gpt-image/scripts/codex_gpt_image.py
index 48dd6a4..aa8257b 100644
--- a/skills/codex-gpt-image/scripts/codex_gpt_image.py
+++ b/skills/codex-gpt-image/scripts/codex_gpt_image.py
@@ -40,7 +40,7 @@
 DEFAULT_OUTPUT_COMPRESSION = 100
 DEFAULT_BACKGROUND = "auto"
 DEFAULT_MODERATION = "auto"
-DEFAULT_TIMEOUT = 180
+DEFAULT_TIMEOUT = 600
 DEFAULT_COUNT = 1
 DEVICE_CODE_TIMEOUT = 15 * 60
 DEVICE_CODE_DEFAULT_INTERVAL = 5