diff --git a/.woodpecker.yml b/.woodpecker.yml
index 5de0428..329ab28 100644
--- a/.woodpecker.yml
+++ b/.woodpecker.yml
@@ -5,7 +5,7 @@ steps:
       - golangci-lint run ./...
 
   - name: test
-    image: golang:1.22-alpine
+    image: golang:1.26-alpine
     commands:
       - go test ./...
 
@@ -23,7 +23,7 @@ steps:
       - event: [push, pull_request]
 
   - name: gosec
-    image: golang:1.22-bookworm
+    image: golang:1.26-bookworm
     commands:
       - go install github.com/securego/gosec/v2/cmd/gosec@latest
       - gosec -exclude=G120,G706,G101,G115,G203,G124 ./...
diff --git a/CLAUDE.md b/CLAUDE.md
index a74e6f8..5b19b87 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -6,7 +6,7 @@
 
 ## Stack
 
-- **Language:** Go 1.22+
+- **Language:** Go 1.26+
 - **HTTP:** `net/http` (stdlib) + `chi` router (lightweight)
 - **Database:** MongoDB (OAuth token storage)
 - **Mongo driver:** `go.mongodb.org/mongo-driver/v2`
diff --git a/Dockerfile b/Dockerfile
index c166b41..4232841 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.22-alpine AS builder
+FROM golang:1.26-alpine AS builder
 WORKDIR /app
 COPY go.mod go.sum ./
 RUN go mod download