diff --git a/CHANGELOG.md b/CHANGELOG.md
index 524e996aa3..7f01d62f24 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Changelog
 
-## 3.4.0-rc.0 / 2025-04-29
+## 3.4.0 / 2025-05-16
 
 * [CHANGE] Config: Make setting out-of-order native histograms feature (`--enable-feature=ooo-native-histograms`) a no-op. Out-of-order native histograms are now always enabled when `out_of_order_time_window` is greater than zero and `--enable-feature=native-histograms` is set. #16207
 * [FEATURE] OTLP translate: Add feature flag for optionally translating OTel explicit bucket histograms into native histograms with custom buckets. #15850
diff --git a/VERSION b/VERSION
index f8c49c90d1..18091983f5 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-3.4.0-rc.0
+3.4.0
diff --git a/web/ui/mantine-ui/package.json b/web/ui/mantine-ui/package.json
index 617cfbe898..c29ba5dada 100644
--- a/web/ui/mantine-ui/package.json
+++ b/web/ui/mantine-ui/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@prometheus-io/mantine-ui",
   "private": true,
-  "version": "0.304.0-rc.0",
+  "version": "0.304.0",
   "type": "module",
   "scripts": {
     "start": "vite",
@@ -28,7 +28,7 @@
     "@microsoft/fetch-event-source": "^2.0.1",
     "@nexucis/fuzzy": "^0.5.1",
     "@nexucis/kvsearch": "^0.9.1",
-    "@prometheus-io/codemirror-promql": "0.304.0-rc.0",
+    "@prometheus-io/codemirror-promql": "0.304.0",
     "@reduxjs/toolkit": "^2.7.0",
     "@tabler/icons-react": "^3.31.0",
     "@tanstack/react-query": "^5.74.7",
diff --git a/web/ui/module/codemirror-promql/package.json b/web/ui/module/codemirror-promql/package.json
index bfaa688b64..38aeb96a79 100644
--- a/web/ui/module/codemirror-promql/package.json
+++ b/web/ui/module/codemirror-promql/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@prometheus-io/codemirror-promql",
-  "version": "0.304.0-rc.0",
+  "version": "0.304.0",
   "description": "a CodeMirror mode for the PromQL language",
   "types": "dist/esm/index.d.ts",
   "module": "dist/esm/index.js",
@@ -29,7 +29,7 @@
   },
   "homepage": "https://github.com/prometheus/prometheus/blob/main/web/ui/module/codemirror-promql/README.md",
   "dependencies": {
-    "@prometheus-io/lezer-promql": "0.304.0-rc.0",
+    "@prometheus-io/lezer-promql": "0.304.0",
     "lru-cache": "^11.1.0"
   },
   "devDependencies": {
diff --git a/web/ui/module/lezer-promql/package.json b/web/ui/module/lezer-promql/package.json
index 04ff0590e2..dd96ca1f4d 100644
--- a/web/ui/module/lezer-promql/package.json
+++ b/web/ui/module/lezer-promql/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@prometheus-io/lezer-promql",
-  "version": "0.304.0-rc.0",
+  "version": "0.304.0",
   "description": "lezer-based PromQL grammar",
   "main": "dist/index.cjs",
   "type": "module",
diff --git a/web/ui/package-lock.json b/web/ui/package-lock.json
index b99c491648..2faff6bc28 100644
--- a/web/ui/package-lock.json
+++ b/web/ui/package-lock.json
@@ -24,7 +24,7 @@
     },
     "mantine-ui": {
       "name": "@prometheus-io/mantine-ui",
-      "version": "0.304.0-rc.0",
+      "version": "0.304.0",
       "dependencies": {
         "@codemirror/autocomplete": "^6.18.6",
         "@codemirror/language": "^6.11.0",
@@ -42,7 +42,7 @@
         "@microsoft/fetch-event-source": "^2.0.1",
         "@nexucis/fuzzy": "^0.5.1",
         "@nexucis/kvsearch": "^0.9.1",
-        "@prometheus-io/codemirror-promql": "0.304.0-rc.0",
+        "@prometheus-io/codemirror-promql": "0.304.0",
         "@reduxjs/toolkit": "^2.7.0",
         "@tabler/icons-react": "^3.31.0",
         "@tanstack/react-query": "^5.74.7",
@@ -189,10 +189,10 @@
     },
     "module/codemirror-promql": {
       "name": "@prometheus-io/codemirror-promql",
-      "version": "0.304.0-rc.0",
+      "version": "0.304.0",
       "license": "Apache-2.0",
       "dependencies": {
-        "@prometheus-io/lezer-promql": "0.304.0-rc.0",
+        "@prometheus-io/lezer-promql": "0.304.0",
         "lru-cache": "^11.1.0"
       },
       "devDependencies": {
@@ -222,7 +222,7 @@
     },
     "module/lezer-promql": {
       "name": "@prometheus-io/lezer-promql",
-      "version": "0.304.0-rc.0",
+      "version": "0.304.0",
       "license": "Apache-2.0",
       "devDependencies": {
         "@lezer/generator": "^1.7.3",
diff --git a/web/ui/package.json b/web/ui/package.json
index f56bccaf8d..e46fb0971c 100644
--- a/web/ui/package.json
+++ b/web/ui/package.json
@@ -1,7 +1,7 @@
 {
   "name": "prometheus-io",
   "description": "Monorepo for the Prometheus UI",
-  "version": "0.304.0-rc.0",
+  "version": "0.304.0",
   "private": true,
   "scripts": {
     "build": "bash build_ui.sh --all",