diff --git a/.gitea/workflows/build.yml b/.gitea/workflows/build.yml
index 9694c8f..d3a096a 100644
--- a/.gitea/workflows/build.yml
+++ b/.gitea/workflows/build.yml
@@ -39,7 +39,8 @@ jobs:
             ${{ runner.os }}-yarn-
 
       - name: Install dependencies
-        run: yarn install --frozen-lockfile --prefer-offline
+        # --immutable ensures the lockfile isn't changed (replaces --frozen-lockfile)
+        run: yarn install --immutable
 
       - name: Build Svelte App
         run: yarn build
diff --git a/.gitea/workflows/deploy.yml b/.gitea/workflows/deploy.yml
index 03fce8a..3a408f5 100644
--- a/.gitea/workflows/deploy.yml
+++ b/.gitea/workflows/deploy.yml
@@ -44,7 +44,8 @@ jobs:
             ${{ runner.os }}-yarn-
 
       - name: Install dependencies
-        run: yarn install --frozen-lockfile --prefer-offline
+        # --immutable ensures the lockfile isn't changed (replaces --frozen-lockfile)
+        run: yarn install --immutable
 
       - name: Validation
         run: |
diff --git a/.gitea/workflows/lint.yml b/.gitea/workflows/lint.yml
index 1583970..72b3920 100644
--- a/.gitea/workflows/lint.yml
+++ b/.gitea/workflows/lint.yml
@@ -51,4 +51,5 @@ jobs:
             ${{ runner.os }}-yarn-
 
       - name: Install dependencies
-        run: yarn install --frozen-lockfile --prefer-offline
+        # --immutable ensures the lockfile isn't changed (replaces --frozen-lockfile)
+        run: yarn install --immutable
diff --git a/.gitea/workflows/test.yml b/.gitea/workflows/test.yml
index d9ee579..6495cb4 100644
--- a/.gitea/workflows/test.yml
+++ b/.gitea/workflows/test.yml
@@ -40,7 +40,8 @@ jobs:
             ${{ runner.os }}-yarn-
 
       - name: Install dependencies
-        run: yarn install --frozen-lockfile --prefer-offline
+        # --immutable ensures the lockfile isn't changed (replaces --frozen-lockfile)
+        run: yarn install --immutable
 
       - name: Type Check
         run: yarn svelte-check --threshold warning