diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index ac71317..a57e933 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -17,7 +17,7 @@ jobs:
         uses: erlef/setup-beam@v1.15.4
         with:
           otp-version: "25.2"
-          gleam-version: "1.2.1"
+          gleam-version: "1.5.1"
           rebar3-version: "3"
 
       - name: Build and publish package
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 6f138ff..23643b5 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -18,7 +18,7 @@ jobs:
       - uses: erlef/setup-beam@v1.15.4
         with:
           otp-version: "25.2"
-          gleam-version: "1.2.1"
+          gleam-version: "1.5.1"
           rebar3-version: "3"
       - run: gleam format --check src test
       - run: gleam deps download