diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index f48338b924..7bad1faa78 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -57,7 +57,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: cachix/install-nix-action@v18
+      - uses: cachix/install-nix-action@v20
       - uses: cachix/cachix-action@v12
         with:
           name: ethermint
@@ -73,7 +73,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2.3.4
-      - uses: cachix/install-nix-action@v18
+      - uses: cachix/install-nix-action@v20
       - uses: cachix/cachix-action@v12
         with:
           name: ethermint
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 33ca1ad133..ed4c7bd077 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -87,7 +87,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: cachix/install-nix-action@v18
+      - uses: cachix/install-nix-action@v20
       - uses: cachix/cachix-action@v12
         with:
           name: ethermint
@@ -122,7 +122,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v2
-      - uses: cachix/install-nix-action@v18
+      - uses: cachix/install-nix-action@v20
       - uses: cachix/cachix-action@v12
         with:
           name: ethermint