diff --git a/.github/workflows/qa.yml b/.github/workflows/qa.yml
index c509bfb..083eecb 100644
--- a/.github/workflows/qa.yml
+++ b/.github/workflows/qa.yml
@@ -10,7 +10,7 @@ jobs:
   qa:
     runs-on: ubuntu-latest
     container:
-      image: crystallang/crystal:1.10.0
+      image: crystallang/crystal:1.11.0
     steps:
       - uses: actions/checkout@v1
       - name: Install required packages
diff --git a/.github/workflows/specs.yml b/.github/workflows/specs.yml
index 0dcd095..5feaddc 100644
--- a/.github/workflows/specs.yml
+++ b/.github/workflows/specs.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false
     container:
-      image: crystallang/crystal:1.10.0
+      image: crystallang/crystal:1.11.0
     steps:
     - uses: actions/checkout@v2
     - name: Install required packages
diff --git a/README.md b/README.md
index 85c0b5b..931db59 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ For more information on how to this works with other frontends/backends, head ov
 
 ## System requirements
 
-* [Crystal](https://crystal-lang.org/) 1.10+
+* [Crystal](https://crystal-lang.org/) 1.11+
 * [Node.js](https://nodejs.org/en/) - 18.x
 
 ## Installation