diff --git a/docs/specification/2025-03-26/basic/lifecycle.mdx b/docs/specification/2025-03-26/basic/lifecycle.mdx
index aa6ce1de9..e4db41315 100644
--- a/docs/specification/2025-03-26/basic/lifecycle.mdx
+++ b/docs/specification/2025-03-26/basic/lifecycle.mdx
@@ -153,6 +153,7 @@ Key capabilities include:
 | Server   | `resources`    | Provides readable [resources](/specification/2025-03-26/server/resources)           |
 | Server   | `tools`        | Exposes callable [tools](/specification/2025-03-26/server/tools)                    |
 | Server   | `logging`      | Emits structured [log messages](/specification/2025-03-26/server/utilities/logging) |
+| Server   | `completions`  | Supports argument [completions](/specification/2025-03-26/server/utilities/completion) |
 | Server   | `experimental` | Describes support for non-standard experimental features                   |
 
 Capability objects can describe sub-capabilities like: