diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 2e9506aa..19705fc0 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -50,7 +50,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: cachix/install-nix-action@v17
+      - uses: cachix/install-nix-action@v18
       - uses: cachix/cachix-action@v11
         with:
           name: ethermint
@@ -66,7 +66,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2.3.4
-      - uses: cachix/install-nix-action@v17
+      - uses: cachix/install-nix-action@v18
       - uses: cachix/cachix-action@v11
         with:
           name: ethermint
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 9f124dad..7fe83dcf 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -106,7 +106,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: cachix/install-nix-action@v17
+      - uses: cachix/install-nix-action@v18
       - uses: cachix/cachix-action@v11
         with:
           name: ethermint
@@ -141,7 +141,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v2
-      - uses: cachix/install-nix-action@v15
+      - uses: cachix/install-nix-action@v18
       - uses: cachix/cachix-action@v11
         with:
           name: ethermint