diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 8eb9f7b..6b84161 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -43,7 +43,7 @@ jobs:
 
         steps:
             - name: Checkout
-              uses: actions/checkout@v7
+              uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # pin@v7.0.1
 
             - name: Set up environment
               uses: ./.github/actions/setup
@@ -79,7 +79,7 @@ jobs:
 
         steps:
             - name: Checkout
-              uses: actions/checkout@v7
+              uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # pin@v7.0.1
 
             - name: Set up environment
               uses: ./.github/actions/setup
@@ -101,7 +101,7 @@ jobs:
 
         steps:
             - name: Checkout
-              uses: actions/checkout@v7
+              uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # pin@v7.0.1
 
             - name: Set up environment
               uses: ./.github/actions/setup
@@ -118,7 +118,7 @@ jobs:
 
         steps:
             - name: Checkout
-              uses: actions/checkout@v7
+              uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # pin@v7.0.1
               
             - name: Install SwiftLint
               run: brew install swiftlint