diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 2c65445..14cc7c4 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -7,6 +7,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+      - run: sudo apt-get install gifsicle graphicsmagick
       - uses: actions/checkout@v1
       - uses: actions/setup-node@v1
         with:
diff --git a/packages/gif-creator/__tests__/dev.ts b/packages/gif-creator/__tests__/dev.ts
index 05840af..ed1dc71 100644
--- a/packages/gif-creator/__tests__/dev.ts
+++ b/packages/gif-creator/__tests__/dev.ts
@@ -14,7 +14,7 @@ const drawOptions = {
 
 const gameOptions = { maxSnakeLength: 5 };
 
-const gifOptions = { delay: 100 };
+const gifOptions = { delay: 20 };
 
 const grid = generateGrid(42, 7, { colors: [1, 2, 3, 4], emptyP: 3 });
 
diff --git a/packages/gif-creator/index.ts b/packages/gif-creator/index.ts
index 045de53..9fb4a9d 100644
--- a/packages/gif-creator/index.ts
+++ b/packages/gif-creator/index.ts
@@ -57,6 +57,7 @@ export const createGif = async (
     }
 
     const outFileName = path.join(dir, "out.gif");
+    const optimizedFileName = path.join(dir, "out.optimized.gif");
 
     await execa(
       "gm",
@@ -74,7 +75,17 @@ export const createGif = async (
       ].flat()
     );
 
-    return fs.readFileSync(outFileName);
+    await execa(
+      "gifsicle",
+      [
+        //
+        "--optimize=3",
+        outFileName,
+        ["--output", optimizedFileName],
+      ].flat()
+    );
+
+    return fs.readFileSync(optimizedFileName);
   } finally {
     cleanUp();
   }