diff --git a/composer.lock b/composer.lock
index 21b337a17fb4b6c0db0dc58549f5b8ed468f0821..78430d516b8d17979499202350b7d6970b3dc09a 100644
--- a/composer.lock
+++ b/composer.lock
@@ -437,7 +437,7 @@
         },
         {
             "name": "drupal/core",
-            "version": "10.0.x-dev",
+            "version": "10.0.0-alpha7",
             "dist": {
                 "type": "path",
                 "url": "core",
@@ -589,7 +589,7 @@
         },
         {
             "name": "drupal/core-project-message",
-            "version": "10.0.x-dev",
+            "version": "10.0.0-alpha7",
             "dist": {
                 "type": "path",
                 "url": "composer/Plugin/ProjectMessage",
@@ -622,7 +622,7 @@
         },
         {
             "name": "drupal/core-vendor-hardening",
-            "version": "10.0.x-dev",
+            "version": "10.0.0-alpha7",
             "dist": {
                 "type": "path",
                 "url": "composer/Plugin/VendorHardening",
@@ -8289,11 +8289,7 @@
     ],
     "aliases": [],
     "minimum-stability": "dev",
-    "stability-flags": {
-        "drupal/core": 20,
-        "drupal/core-project-message": 20,
-        "drupal/core-vendor-hardening": 20
-    },
+    "stability-flags": [],
     "prefer-stable": true,
     "prefer-lowest": false,
     "platform": [],
diff --git a/composer/Metapackage/CoreRecommended/composer.json b/composer/Metapackage/CoreRecommended/composer.json
index c6335f1fa531a1564d1dd494819329efb09739b5..c9583752fca7a16e5fab6db177d0b3ae8ec85b8b 100644
--- a/composer/Metapackage/CoreRecommended/composer.json
+++ b/composer/Metapackage/CoreRecommended/composer.json
@@ -7,7 +7,7 @@
         "webflo/drupal-core-strict": "*"
     },
     "require": {
-        "drupal/core": "10.0.x-dev",
+        "drupal/core": "10.0.0-alpha7",
         "asm89/stack-cors": "~v2.1.1",
         "composer/semver": "~3.3.2",
         "doctrine/annotations": "~1.13.2",
diff --git a/composer/Metapackage/PinnedDevDependencies/composer.json b/composer/Metapackage/PinnedDevDependencies/composer.json
index e79c819638cafb0b77b4c82fcac3919338043168..9ce51ff3d43f94506249200274bfbff1cb071ed5 100644
--- a/composer/Metapackage/PinnedDevDependencies/composer.json
+++ b/composer/Metapackage/PinnedDevDependencies/composer.json
@@ -7,7 +7,7 @@
         "webflo/drupal-core-require-dev": "*"
     },
     "require": {
-        "drupal/core": "10.0.x-dev",
+        "drupal/core": "10.0.0-alpha7",
         "behat/mink": "v1.10.0",
         "behat/mink-browserkit-driver": "v2.1.0",
         "behat/mink-selenium2-driver": "v1.6.0",
diff --git a/composer/Template/LegacyProject/composer.json b/composer/Template/LegacyProject/composer.json
index 49794e35291584bbe62d5bcb79efa49559f68ffa..22f1739e487897a1c61758fced7d0cc6b25875da 100644
--- a/composer/Template/LegacyProject/composer.json
+++ b/composer/Template/LegacyProject/composer.json
@@ -27,7 +27,7 @@
     "conflict": {
         "drupal/drupal": "*"
     },
-    "minimum-stability": "dev",
+    "minimum-stability": "alpha",
     "prefer-stable": true,
     "config": {
         "allow-plugins": {
diff --git a/composer/Template/RecommendedProject/composer.json b/composer/Template/RecommendedProject/composer.json
index b8e5e176c58cebc55d893bab7fabff1a9bb8910e..590dbc6cf5023be0ce6f01b18bd8aa5ea4045626 100644
--- a/composer/Template/RecommendedProject/composer.json
+++ b/composer/Template/RecommendedProject/composer.json
@@ -26,7 +26,7 @@
     "conflict": {
         "drupal/drupal": "*"
     },
-    "minimum-stability": "dev",
+    "minimum-stability": "alpha",
     "prefer-stable": true,
     "config": {
         "allow-plugins": {
diff --git a/core/lib/Drupal.php b/core/lib/Drupal.php
index e34cbf7857b66bc311a0f8d5550259a5a76180c8..e63d53a912cb3f0b79df4a311363a0b5521a6280 100644
--- a/core/lib/Drupal.php
+++ b/core/lib/Drupal.php
@@ -75,7 +75,7 @@ class Drupal {
   /**
    * The current system version.
    */
-  const VERSION = '10.0.0-dev';
+  const VERSION = '10.0.0-alpha7';
 
   /**
    * Core API compatibility.