diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 355dd79b9..5f6b7ffde 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -6,21 +6,21 @@
   "packages/database/dev": "0.8.0",
   "packages/database/prod": "0.6.0",
   "packages/database/proxy": "0.1.2",
-  "packages/dev": "4.17.0",
+  "packages/dev": "4.17.1",
   "packages/dev-utils": "4.4.3",
   "packages/edge-functions/dev": "1.0.16",
   "packages/edge-functions/prod": "3.0.6",
   "packages/functions/prod": "5.2.0",
-  "packages/functions/dev": "1.2.5",
+  "packages/functions/dev": "1.2.6",
   "packages/headers": "2.1.8",
   "packages/images": "1.3.7",
-  "packages/nuxt-module": "0.2.38",
+  "packages/nuxt-module": "0.2.39",
   "packages/otel": "5.1.5",
   "packages/redirects": "3.1.10",
   "packages/runtime": "4.1.20",
   "packages/runtime-utils": "2.3.0",
   "packages/static": "3.1.7",
   "packages/types": "2.6.0",
-  "packages/vite-plugin": "2.11.4",
-  "packages/vite-plugin-tanstack-start": "1.3.4"
+  "packages/vite-plugin": "2.11.5",
+  "packages/vite-plugin-tanstack-start": "1.3.5"
 }
diff --git a/package-lock.json b/package-lock.json
index f042979df..854bf7e81 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -22485,7 +22485,7 @@
     },
     "packages/dev": {
       "name": "@netlify/dev",
-      "version": "4.17.0",
+      "version": "4.17.1",
       "license": "MIT",
       "dependencies": {
         "@netlify/ai": "^0.4.1",
@@ -22494,7 +22494,7 @@
         "@netlify/database-dev": "0.8.0",
         "@netlify/dev-utils": "4.4.3",
         "@netlify/edge-functions-dev": "1.0.16",
-        "@netlify/functions-dev": "1.2.5",
+        "@netlify/functions-dev": "1.2.6",
         "@netlify/headers": "2.1.8",
         "@netlify/images": "1.3.7",
         "@netlify/redirects": "3.1.10",
@@ -22646,7 +22646,7 @@
     },
     "packages/functions/dev": {
       "name": "@netlify/functions-dev",
-      "version": "1.2.5",
+      "version": "1.2.6",
       "license": "MIT",
       "dependencies": {
         "@netlify/blobs": "10.7.4",
@@ -22903,10 +22903,10 @@
     },
     "packages/nuxt-module": {
       "name": "@netlify/nuxt",
-      "version": "0.2.38",
+      "version": "0.2.39",
       "license": "MIT",
       "dependencies": {
-        "@netlify/dev": "^4.17.0",
+        "@netlify/dev": "^4.17.1",
         "@netlify/dev-utils": "^4.4.3",
         "@nuxt/kit": "^4.0.0",
         "h3": "^1.15.3"
@@ -23143,10 +23143,10 @@
     },
     "packages/vite-plugin": {
       "name": "@netlify/vite-plugin",
-      "version": "2.11.4",
+      "version": "2.11.5",
       "license": "MIT",
       "dependencies": {
-        "@netlify/dev": "4.17.0",
+        "@netlify/dev": "4.17.1",
         "@netlify/dev-utils": "^4.4.3",
         "dedent": "^1.7.0"
       },
@@ -23166,10 +23166,10 @@
     },
     "packages/vite-plugin-tanstack-start": {
       "name": "@netlify/vite-plugin-tanstack-start",
-      "version": "1.3.4",
+      "version": "1.3.5",
       "license": "MIT",
       "dependencies": {
-        "@netlify/vite-plugin": "^2.11.4"
+        "@netlify/vite-plugin": "^2.11.5"
       },
       "devDependencies": {
         "@netlify/dev-utils": "^4.4.3",
diff --git a/packages/dev/CHANGELOG.md b/packages/dev/CHANGELOG.md
index f85e3d96b..3aac49e70 100644
--- a/packages/dev/CHANGELOG.md
+++ b/packages/dev/CHANGELOG.md
@@ -1,5 +1,14 @@
 # Changelog
 
+## [4.17.1](https://github.com/netlify/primitives/compare/dev-v4.17.0...dev-v4.17.1) (2026-04-14)
+
+
+### Dependencies
+
+* The following workspace dependencies were updated
+  * dependencies
+    * @netlify/functions-dev bumped from 1.2.5 to 1.2.6
+
 ## [4.17.0](https://github.com/netlify/primitives/compare/dev-v4.16.5...dev-v4.17.0) (2026-04-13)
 
 
diff --git a/packages/dev/package.json b/packages/dev/package.json
index c1e658f24..fc4490df2 100644
--- a/packages/dev/package.json
+++ b/packages/dev/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@netlify/dev",
-  "version": "4.17.0",
+  "version": "4.17.1",
   "description": "Emulation of the Netlify environment for local development",
   "type": "module",
   "engines": {
@@ -62,7 +62,7 @@
     "@netlify/database-dev": "0.8.0",
     "@netlify/dev-utils": "4.4.3",
     "@netlify/edge-functions-dev": "1.0.16",
-    "@netlify/functions-dev": "1.2.5",
+    "@netlify/functions-dev": "1.2.6",
     "@netlify/headers": "2.1.8",
     "@netlify/images": "1.3.7",
     "@netlify/redirects": "3.1.10",
diff --git a/packages/functions/dev/CHANGELOG.md b/packages/functions/dev/CHANGELOG.md
index 1e776f9a2..187ee320e 100644
--- a/packages/functions/dev/CHANGELOG.md
+++ b/packages/functions/dev/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [1.2.6](https://github.com/netlify/primitives/compare/functions-dev-v1.2.5...functions-dev-v1.2.6) (2026-04-14)
+
+
+### Bug Fixes
+
+* preserve multi-value response headers in dev ([#646](https://github.com/netlify/primitives/issues/646)) ([f18e24b](https://github.com/netlify/primitives/commit/f18e24b162d7889384131c01b60eff07d425d80e))
+
 ## [1.2.5](https://github.com/netlify/primitives/compare/functions-dev-v1.2.4...functions-dev-v1.2.5) (2026-04-07)
 
 
diff --git a/packages/functions/dev/package.json b/packages/functions/dev/package.json
index 6047965d5..230eda732 100644
--- a/packages/functions/dev/package.json
+++ b/packages/functions/dev/package.json
@@ -11,7 +11,7 @@
       }
     }
   },
-  "version": "1.2.5",
+  "version": "1.2.6",
   "description": "Local dev emulation of Netlify Functions",
   "files": [
     "dist/**/*.js",
diff --git a/packages/nuxt-module/CHANGELOG.md b/packages/nuxt-module/CHANGELOG.md
index aae32aaad..9c40aaf52 100644
--- a/packages/nuxt-module/CHANGELOG.md
+++ b/packages/nuxt-module/CHANGELOG.md
@@ -1,5 +1,14 @@
 # Changelog
 
+## [0.2.39](https://github.com/netlify/primitives/compare/nuxt-v0.2.38...nuxt-v0.2.39) (2026-04-14)
+
+
+### Dependencies
+
+* The following workspace dependencies were updated
+  * dependencies
+    * @netlify/dev bumped from ^4.17.0 to ^4.17.1
+
 ## [0.2.38](https://github.com/netlify/primitives/compare/nuxt-v0.2.37...nuxt-v0.2.38) (2026-04-13)
 
 
diff --git a/packages/nuxt-module/package.json b/packages/nuxt-module/package.json
index 288e3e80b..9cd52b512 100644
--- a/packages/nuxt-module/package.json
+++ b/packages/nuxt-module/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@netlify/nuxt",
-  "version": "0.2.38",
+  "version": "0.2.39",
   "description": "Nuxt module providing local emulation of the Netlify environment",
   "type": "module",
   "engines": {
@@ -54,7 +54,7 @@
   },
   "author": "Netlify Inc.",
   "dependencies": {
-    "@netlify/dev": "^4.17.0",
+    "@netlify/dev": "^4.17.1",
     "@netlify/dev-utils": "^4.4.3",
     "@nuxt/kit": "^4.0.0",
     "h3": "^1.15.3"
diff --git a/packages/vite-plugin-tanstack-start/CHANGELOG.md b/packages/vite-plugin-tanstack-start/CHANGELOG.md
index f7885d3bf..4d179ca9d 100644
--- a/packages/vite-plugin-tanstack-start/CHANGELOG.md
+++ b/packages/vite-plugin-tanstack-start/CHANGELOG.md
@@ -1,5 +1,14 @@
 # Changelog
 
+## [1.3.5](https://github.com/netlify/primitives/compare/vite-plugin-tanstack-start-v1.3.4...vite-plugin-tanstack-start-v1.3.5) (2026-04-14)
+
+
+### Dependencies
+
+* The following workspace dependencies were updated
+  * dependencies
+    * @netlify/vite-plugin bumped from ^2.11.4 to ^2.11.5
+
 ## [1.3.4](https://github.com/netlify/primitives/compare/vite-plugin-tanstack-start-v1.3.3...vite-plugin-tanstack-start-v1.3.4) (2026-04-13)
 
 
diff --git a/packages/vite-plugin-tanstack-start/package.json b/packages/vite-plugin-tanstack-start/package.json
index b59491dbe..6f46e9826 100644
--- a/packages/vite-plugin-tanstack-start/package.json
+++ b/packages/vite-plugin-tanstack-start/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@netlify/vite-plugin-tanstack-start",
-  "version": "1.3.4",
+  "version": "1.3.5",
   "description": "Vite plugin for TanStack Start on Netlify",
   "type": "module",
   "engines": {
@@ -50,7 +50,7 @@
     "vitest": "^3.0.0"
   },
   "dependencies": {
-    "@netlify/vite-plugin": "^2.11.4"
+    "@netlify/vite-plugin": "^2.11.5"
   },
   "peerDependencies": {
     "@tanstack/react-start": ">=1.132.0",
diff --git a/packages/vite-plugin/CHANGELOG.md b/packages/vite-plugin/CHANGELOG.md
index 0bedeabba..68a82a9a8 100644
--- a/packages/vite-plugin/CHANGELOG.md
+++ b/packages/vite-plugin/CHANGELOG.md
@@ -1,5 +1,14 @@
 # Changelog
 
+## [2.11.5](https://github.com/netlify/primitives/compare/vite-plugin-v2.11.4...vite-plugin-v2.11.5) (2026-04-14)
+
+
+### Dependencies
+
+* The following workspace dependencies were updated
+  * dependencies
+    * @netlify/dev bumped from 4.17.0 to 4.17.1
+
 ## [2.11.4](https://github.com/netlify/primitives/compare/vite-plugin-v2.11.3...vite-plugin-v2.11.4) (2026-04-13)
 
 
diff --git a/packages/vite-plugin/package.json b/packages/vite-plugin/package.json
index 2ffd2f7b0..18e71c9f6 100644
--- a/packages/vite-plugin/package.json
+++ b/packages/vite-plugin/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@netlify/vite-plugin",
-  "version": "2.11.4",
+  "version": "2.11.5",
   "description": "Vite plugin with a local emulation of the Netlify environment",
   "type": "module",
   "engines": {
@@ -44,7 +44,7 @@
     "vitest": "^3.0.0"
   },
   "dependencies": {
-    "@netlify/dev": "4.17.0",
+    "@netlify/dev": "4.17.1",
     "@netlify/dev-utils": "^4.4.3",
     "dedent": "^1.7.0"
   },