diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 3fb01d451..cb24ec0e0 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -5,6 +5,13 @@ repos:
       - id: typos
   - repo: local
     hooks:
+      - id: ensure Swift not changed to local development
+        name: ensure Swift not changed to local development
+        language: system
+        types: [file, swift]
+        entry: ./scripts/ios/ensure-not-local.sh
+        pass_filenames: false
+
       - id: fmt
         name: fmt
         language: system
diff --git a/Package.swift b/Package.swift
index 73aa60cbb..53499e635 100644
--- a/Package.swift
+++ b/Package.swift
@@ -5,7 +5,7 @@ import PackageDescription
 
 let sargonBinaryTargetName = "SargonCoreRS"
 let binaryTarget: Target
-let useLocalFramework = true
+let useLocalFramework = false
 
 if useLocalFramework {
 	binaryTarget = .binaryTarget(
diff --git a/scripts/ios/ensure-not-local.sh b/scripts/ios/ensure-not-local.sh
new file mode 100755
index 000000000..5fb08a6ec
--- /dev/null
+++ b/scripts/ios/ensure-not-local.sh
@@ -0,0 +1,11 @@
+#!/usr/bin/env zsh
+
+set -e
+set -u
+
+if grep -q "let useLocalFramework = true" Package.swift; then
+    echo "You MUST let useLocalFramework be set to 'false'. Else Swift release will fail."
+    exit 1;
+fi
+
+exit 0;
\ No newline at end of file
diff --git a/scripts/ios/release.sh b/scripts/ios/release.sh
index cca2953fc..b94532dac 100755
--- a/scripts/ios/release.sh
+++ b/scripts/ios/release.sh
@@ -13,8 +13,7 @@ echo "🚢 Start of '$me' (see: '$DIR/$me')"
 echo "🚢 PWD: $PWD"
 
 echo "🚢 Ensure 'useLocalFramework' is set to 'false' in Package.swift"
-sed -i '' 's/let useLocalFramework = true/let useLocalFramework = false/' Package.swift
-
+sh ./scripts/ios/ensure-not-local.sh || exit $?
 
 `git fetch --prune --tags`
 function last_tag() {