diff --git a/.gitea/workflows/workflow_build-app-ios.yaml b/.gitea/workflows/workflow_build-app-ios.yaml
index f5b975f..5eea161 100644
--- a/.gitea/workflows/workflow_build-app-ios.yaml
+++ b/.gitea/workflows/workflow_build-app-ios.yaml
@@ -73,9 +73,9 @@ jobs:
           MATCH_REPO_SSH_KEY: ${{ secrets.IOS_MATCH_REPO_SSH_KEY_BASE64 }}
 
       - name: Replace API Key from secret
-        # even though the runner is macOS, the sed command is run in a Linux container
+        # on a macOS runner, sed requires a replacement suffix after the -i flag
         run: |
-          sed -i -e "s/IOS_GOOGLE_MAPS_API_KEY/${{ secrets.IOS_GOOGLE_MAPS_API_KEY }}/g" Runner/AppDelegate.swift
+          sed -i '' -e "s/IOS_GOOGLE_MAPS_API_KEY/${{ secrets.IOS_GOOGLE_MAPS_API_KEY }}/g" Runner/AppDelegate.swift
 
       - name: Test flutter
         run: |
diff --git a/frontend/ios/fastlane/Fastfile b/frontend/ios/fastlane/Fastfile
index 4703261..329285f 100644
--- a/frontend/ios/fastlane/Fastfile
+++ b/frontend/ios/fastlane/Fastfile
@@ -32,6 +32,7 @@ platform :ios do
       "flutter",
       "build",
       "ipa",
+      "--release",
       "--build-name=#{build_name}",
       "--build-number=#{build_number}",
     )
@@ -66,6 +67,7 @@ platform :ios do
       "flutter",
       "build",
       "ipa",
+      "--release",
       "--build-name=#{build_name}",
       "--build-number=#{build_number}",
     )