diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index a48aa2b..3ffb958 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -15,7 +15,7 @@ jobs:
             -   uses: "actions/checkout@v4"
             -   uses: "actions/setup-go@v4"
                 with:
-                    go-version: ">=1.19"
+                    go-version: ">=1.20"
             -   name: "Build"
                 run: "go build ./cmd/..."
 
@@ -42,7 +42,7 @@ jobs:
             -   uses: "actions/checkout@v4"
             -   uses: "actions/setup-go@v4"
                 with:
-                    go-version: "^1.19"
+                    go-version: "^1.20"
             -   name: "Run `go test`"
                 run: "go test -race ./..."
 
@@ -53,7 +53,7 @@ jobs:
             -   uses: "actions/checkout@v4"
             -   uses: "actions/setup-go@v4"
                 with:
-                    go-version: "^1.19"
+                    go-version: "^1.20"
             -   name: "Install and configure mochi"
                 run: |
                     go install ./cmd/mochi
@@ -77,7 +77,7 @@ jobs:
             -   uses: "actions/checkout@v4"
             -   uses: "actions/setup-go@v4"
                 with:
-                    go-version: "^1.19"
+                    go-version: "^1.20"
             -   name: "Install and configure mochi"
                 run: |
                     go install ./cmd/mochi