diff --git a/.gitea/workflows/ci.yaml b/.gitea/workflows/ci.yaml
index 563c6a5..02e9d01 100644
--- a/.gitea/workflows/ci.yaml
+++ b/.gitea/workflows/ci.yaml
@@ -24,7 +24,7 @@ jobs:
 
       - uses: actions/setup-go@v5
         with:
-          go-version: "1.25"
+          go-version: "1.26.5"
           cache: false
 
       - name: Cache Go modules
@@ -87,7 +87,7 @@ jobs:
 
       - uses: actions/setup-go@v5
         with:
-          go-version: "1.25"
+          go-version: "1.26.5"
           cache: false
 
       - name: Cache Go modules
@@ -154,7 +154,7 @@ jobs:
 
       - uses: actions/setup-go@v5
         with:
-          go-version: "1.25"
+          go-version: "1.26.5"
           cache: false
 
       - name: Cache Go modules
@@ -201,7 +201,7 @@ jobs:
 
       - uses: actions/setup-go@v5
         with:
-          go-version: "1.25"
+          go-version: "1.26.5"
           cache: false
 
       - name: Cache Go modules
diff --git a/README.md b/README.md
index a1dea3c..1676084 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Crussell
 
-Nail salon booking platform — Go 1.25 backend + SvelteKit 5 SPA + PostgreSQL 17 + Docker. Built for a UK sole-trader nail artist. UK-only (Cloudflare geo-block), UK phone format. All timestamps UTC-normalised — the backend's `clock.Now()` returns UTC, the DB connection uses `timezone = "UTC"`, and the frontend converts between UTC and wall-clock time client-side. Single-employee business.
+Nail salon booking platform — Go 1.26.5 backend + SvelteKit 5 SPA + PostgreSQL 17 + Docker. Built for a UK sole-trader nail artist. UK-only (Cloudflare geo-block), UK phone format. All timestamps UTC-normalised — the backend's `clock.Now()` returns UTC, the DB connection uses `timezone = "UTC"`, and the frontend converts between UTC and wall-clock time client-side. Single-employee business.
 
 ## Features
 
diff --git a/backend/go.mod b/backend/go.mod
index 4e391b2..b91bb53 100644
--- a/backend/go.mod
+++ b/backend/go.mod
@@ -1,6 +1,6 @@
 module crussell
 
-go 1.25.7
+go 1.26.5
 
 require (
 	github.com/aws/aws-sdk-go-v2 v1.42.0
diff --git a/obsidian/Crussell/Overview.md b/obsidian/Crussell/Overview.md
index 6cb43e7..f93bac0 100644
--- a/obsidian/Crussell/Overview.md
+++ b/obsidian/Crussell/Overview.md
@@ -1,6 +1,6 @@
 # Crussell — Overview
 
-Full-stack booking platform for a UK sole-trader nail artist. Go 1.25 backend, SvelteKit 5 SPA frontend, PostgreSQL 17, Docker Compose. UK-only (Cloudflare geo-blocks non-UK). All timestamps UTC-normalised — the backend's `clock.Now()` returns `time.Now().UTC()`, the DB connection uses `timezone = "UTC"`, and the frontend converts between UTC and the browser's local wall-clock time via `formatLocalDateTime()` / `parseWallClockDate()`. No timezone conversion ambiguity — times shown are always UK wall-clock times.
+Full-stack booking platform for a UK sole-trader nail artist. Go 1.26.5 backend, SvelteKit 5 SPA frontend, PostgreSQL 17, Docker Compose. UK-only (Cloudflare geo-blocks non-UK). All timestamps UTC-normalised — the backend's `clock.Now()` returns `time.Now().UTC()`, the DB connection uses `timezone = "UTC"`, and the frontend converts between UTC and the browser's local wall-clock time via `formatLocalDateTime()` / `parseWallClockDate()`. No timezone conversion ambiguity — times shown are always UK wall-clock times.
 
 ---
 
@@ -136,7 +136,7 @@ Campaign lifecycle: `draft → active → completed` (or any → `cancelled`, `a
 | Tool | Version | Notes |
 |------|---------|-------|
 | Docker & Docker Compose | >= 20.10 | Compose V2 (`docker compose`, not `docker-compose`) |
-| Go | >= 1.22 | Tested with 1.25 |
+| Go | >= 1.22 | Tested with 1.26.5 |
 | Node | >= 18 | For frontend build |
 | tmux | >= 3.0 | For local-dev-2.sh dev helper |
 | psql | Any | Optional — for direct DB inspection during dev |