diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
new file mode 100644
index 0000000..53c24b7
--- /dev/null
+++ b/.github/workflows/ci.yaml
@@ -0,0 +1,47 @@
+name: CI
+
+permissions:
+    contents: read
+    packages: write
+
+on:
+    push:
+        branches: [main]
+        tags: ["v*.*.*"]
+    pull_request:
+
+jobs:
+    build:
+        runs-on: ubuntu-latest
+
+        steps:
+            - uses: actions/checkout@v4
+
+            - uses: docker/login-action@v3.6.0
+              with:
+                  registry: ghcr.io
+                  username: ${{ github.actor }}
+                  password: ${{ secrets.GITHUB_TOKEN }}
+
+            - uses: docker/setup-qemu-action@v3
+
+            - uses: docker/setup-buildx-action@v3
+
+            - id: meta
+              uses: docker/metadata-action@v5
+              with:
+                images: |
+                    ghcr.io/${{ github.repository_owner }}/${{github.repository}}
+                tags: |
+                    type=semver,pattern={{version}}
+                    type=ref,event=branch
+                    type=ref,event=pr
+
+            - name: Build image
+              uses: docker/build-push-action@v6
+              with:
+                context: .
+                platforms: linux/amd64,linux/arm64
+                push: true
+                tags: ${{ steps.meta.outputs.tags }}
+                labels: ${{ steps.meta.outputs.labels }}
diff --git a/package.json b/package.json
index 0e5cde9..82148b7 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
     "name": "easistent-tt",
     "module": "src/index.ts",
     "type": "module",
-    "version": "4.4.1-evil-world",
+    "version": "4.4.2-mrk",
     "devDependencies": {
         "bun-types": "latest",
         "typescript": "^5.8.3",
diff --git a/src/easistent/fetcher.ts b/src/easistent/fetcher.ts
index 1280bad..5e2f279 100644
--- a/src/easistent/fetcher.ts
+++ b/src/easistent/fetcher.ts
@@ -1,3 +1,5 @@
+import { version } from "../../package.json" with { type: "json" };
+
 export type TimetableRequestParams = {
     schoolId?: number;
     classId?: number;
@@ -13,7 +15,7 @@ export class Fetcher {
     private static readonly fetchOptions: RequestInit = {
         method: "GET",
         headers: {
-            "user-agent": "Mozilla/5.0 (easistent-tt, matic says hi)",
+            "user-agent": `Mozilla/5.0 (X11; Linux x86_64) EasistentTt/${version} (https://github.com/MaticBabnik/easistent-tt; Merry Christmas)`,
             "content-type": "application/x-www-form-urlencoded; charset=UTF-8",
             accept: "text/html",
         },
diff --git a/src/easistent/school.ts b/src/easistent/school.ts
index 8116a0c..c4340f3 100644
--- a/src/easistent/school.ts
+++ b/src/easistent/school.ts
@@ -49,8 +49,11 @@ export type WeekData = {
     scrapedAt: number;
 };
 
-const DEFAULT_TTL = 30 * 60 * 1000;
-const SCRAPE_INTERVAL = DEFAULT_TTL - 30_000;
+const HOUR = 1000 * 60 * 60;
+const DEFAULT_TTL = 2 * HOUR;
+const SCRAPE_INTERVAL = HOUR - 30_000;
+
+const delay = (ms: number) => new Promise((res) => setTimeout(res, ms));
 
 export class School {
     public errors: SchoolError[] = [];
@@ -370,17 +373,33 @@ export class School {
         if (this.asRunning) return;
         this.asRunning = true;
 
-        const as = () => {
-            console.log("Refreshing cache");
+        /**
+         * Scrape surrounding weeks half as often
+         * starts as false but will get flipped on first run
+         */
+        let scrapeSurrounding = false;
+
+        const as = async () => {
             const week = this.getWeekForDate();
 
+            scrapeSurrounding = !scrapeSurrounding;
+            console.log(`Refreshing cache, surrounding=${scrapeSurrounding}`);
+
+            if (!scrapeSurrounding) {
+                await this.getWeek(week, true);
+                return;
+            }
+
             const from = Math.max(1, week - 1);
             const to = Math.min(52, week + 1);
 
             for (let i = from; i <= to; i++) {
-                this.getWeek(i, true);
+                // biome-ignore lint/performance/noAwaitInLoops: intentional
+                await this.getWeek(i, true);
+                delay(3333); // be nice to the server
             }
         };
+
         setInterval(as, SCRAPE_INTERVAL);
         as();
     }