diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8da3920..6813ab7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 ## Unreleased
 
+* New: Add support for database API upgrade endpoint ([#51](https://github.com/Scalingo/scalingo-ruby-api/pull/51))
+
 ## 3.3.0 - 2023-01-03
 
 * Bugfix: response of Backups#create was not properly unpacked ([#44](https://github.com/Scalingo/scalingo-ruby-api/issues/44))
diff --git a/README.md b/README.md
index dff0d55..90895ce 100644
--- a/README.md
+++ b/README.md
@@ -191,7 +191,7 @@ bundle
 ### Run tests
 
 ```bash
-bundle exec rake test
+bundle exec rspec
 ```
 
 ### Release a new version
diff --git a/lib/scalingo/regional_database/databases.rb b/lib/scalingo/regional_database/databases.rb
index 5cb87ac..fb56f87 100644
--- a/lib/scalingo/regional_database/databases.rb
+++ b/lib/scalingo/regional_database/databases.rb
@@ -14,5 +14,18 @@ def find(id, headers = nil, &block)
 
       unpack(:database) { response }
     end
+
+    def upgrade(id, headers = nil, &block)
+      data = nil
+
+      response = database_connection(id).post(
+        "databases/#{id}/upgrade",
+        data,
+        headers,
+        &block
+      )
+
+      unpack(:database) { response }
+    end
   end
 end
diff --git a/samples/regional_database/backups/_meta.json b/samples/regional_database/backups/_meta.json
index 9e28296..2baf9c3 100644
--- a/samples/regional_database/backups/_meta.json
+++ b/samples/regional_database/backups/_meta.json
@@ -1,4 +1,4 @@
 {
-  "addon_id": "ad-5ed10967884fef000f5e4fff",
+  "addon_id": "63bfe3b600deff4f0516cc12",
   "backup_id": "5bb95a904ffb096e9a2831b8"
 }
diff --git a/samples/regional_database/backups/archive-200.json b/samples/regional_database/backups/archive-200.json
index c41ca39..eab2862 100644
--- a/samples/regional_database/backups/archive-200.json
+++ b/samples/regional_database/backups/archive-200.json
@@ -1,5 +1,5 @@
 {
-  "path": "/databases/ad-5ed10967884fef000f5e4fff/backups/5bb95a904ffb096e9a2831b8/archive",
+  "path": "/databases/63bfe3b600deff4f0516cc12/backups/5bb95a904ffb096e9a2831b8/archive",
   "method": "get",
   "request": {
     "headers": {
@@ -18,7 +18,7 @@
       "Referrer-Policy": "strict-origin-when-cross-origin"
     },
     "json_body": {
-      "download_url": "https://regional-database.scalingo.test/databases/ad-5ed10967884fef000f5e4fff/backups/5bb95a904ffb096e9a2831b8/download?token=token1234"
+      "download_url": "https://regional-database.scalingo.test/databases/63bfe3b600deff4f0516cc12/backups/5bb95a904ffb096e9a2831b8/download?token=token1234"
     }
   }
 }
diff --git a/samples/regional_database/backups/archive-400.json b/samples/regional_database/backups/archive-400.json
index 23c819d..64ab78f 100644
--- a/samples/regional_database/backups/archive-400.json
+++ b/samples/regional_database/backups/archive-400.json
@@ -1,5 +1,5 @@
 {
-  "path": "/databases/ad-5ed10967884fef000f5e4fff/backups/5bb95a904ffb096e9a2831b8/archive",
+  "path": "/databases/63bfe3b600deff4f0516cc12/backups/5bb95a904ffb096e9a2831b8/archive",
   "method": "get",
   "request": {
     "headers": {
diff --git a/samples/regional_database/backups/create-201.json b/samples/regional_database/backups/create-201.json
index 96c1d0d..1b55e75 100644
--- a/samples/regional_database/backups/create-201.json
+++ b/samples/regional_database/backups/create-201.json
@@ -1,5 +1,5 @@
 {
-  "path": "/databases/ad-5ed10967884fef000f5e4fff/backups",
+  "path": "/databases/63bfe3b600deff4f0516cc12/backups",
   "method": "post",
   "request": {
     "headers": {
diff --git a/samples/regional_database/backups/create-400.json b/samples/regional_database/backups/create-400.json
index 31143e2..f4f9aba 100644
--- a/samples/regional_database/backups/create-400.json
+++ b/samples/regional_database/backups/create-400.json
@@ -1,5 +1,5 @@
 {
-  "path": "/databases/ad-5ed10967884fef000f5e4fff/backups",
+  "path": "/databases/63bfe3b600deff4f0516cc12/backups",
   "method": "post",
   "request": {
     "headers": {
diff --git a/samples/regional_database/backups/for-200.json b/samples/regional_database/backups/for-200.json
index 6011c37..7b114be 100644
--- a/samples/regional_database/backups/for-200.json
+++ b/samples/regional_database/backups/for-200.json
@@ -1,5 +1,5 @@
 {
-  "path": "/databases/ad-5ed10967884fef000f5e4fff/backups",
+  "path": "/databases/63bfe3b600deff4f0516cc12/backups",
   "method": "get",
   "request": {
     "headers": {
diff --git a/samples/regional_database/backups/for-400.json b/samples/regional_database/backups/for-400.json
index ce7f6a2..31e679e 100644
--- a/samples/regional_database/backups/for-400.json
+++ b/samples/regional_database/backups/for-400.json
@@ -1,5 +1,5 @@
 {
-  "path": "/databases/ad-5ed10967884fef000f5e4fff/backups",
+  "path": "/databases/63bfe3b600deff4f0516cc12/backups",
   "method": "get",
   "request": {
     "headers": {
diff --git a/samples/regional_database/databases/_meta.json b/samples/regional_database/databases/_meta.json
index 9418729..e6339ab 100644
--- a/samples/regional_database/databases/_meta.json
+++ b/samples/regional_database/databases/_meta.json
@@ -1,3 +1,3 @@
 {
-  "id": "ad-5ed10967884fef000f5e4fff"
+  "id": "63bfe3b600deff4f0516cc12"
 }
diff --git a/samples/regional_database/databases/find-200.json b/samples/regional_database/databases/find-200.json
index 1d89912..5cc228d 100644
--- a/samples/regional_database/databases/find-200.json
+++ b/samples/regional_database/databases/find-200.json
@@ -1,5 +1,5 @@
 {
-  "path": "/databases/ad-5ed10967884fef000f5e4fff",
+  "path": "/databases/63bfe3b600deff4f0516cc12",
   "method": "get",
   "request": {
     "headers": {
@@ -19,7 +19,7 @@
     },
     "json_body": {
       "database": {
-        "id": "ad-5ed10967884fef000f5e4fff",
+        "id": "63bfe3b600deff4f0516cc12",
         "resource_id": "my-db-123",
         "app_name": "my-app",
         "created_at": "2019-02-05T15:38:14.343+01:00",
@@ -38,7 +38,9 @@
         "instances": [],
         "readable_version": "3.2.9-1",
         "periodic_backups_enabled": true,
-        "periodic_backups_scheduled_at": [0]
+        "periodic_backups_scheduled_at": [
+          0
+        ]
       }
     }
   }
diff --git a/samples/regional_database/databases/find-400.json b/samples/regional_database/databases/find-400.json
index 70f1f13..8b92faa 100644
--- a/samples/regional_database/databases/find-400.json
+++ b/samples/regional_database/databases/find-400.json
@@ -1,5 +1,5 @@
 {
-  "path": "/databases/ad-5ed10967884fef000f5e4fff",
+  "path": "/databases/63bfe3b600deff4f0516cc12",
   "method": "get",
   "request": {
     "headers": {
diff --git a/samples/regional_database/databases/upgrade-202.json b/samples/regional_database/databases/upgrade-202.json
new file mode 100644
index 0000000..e84361b
--- /dev/null
+++ b/samples/regional_database/databases/upgrade-202.json
@@ -0,0 +1,39 @@
+{
+  "path": "/databases/63bfe3b600deff4f0516cc12/upgrade",
+  "method": "post",
+  "request": {
+    "headers": {
+      "Authorization": "Bearer the-bearer-token"
+    }
+  },
+  "response": {
+    "status": 202,
+    "headers": {
+      "Date": "Fri, 29 May 2020 13:08:59 GMT",
+      "Etag": "W/\"a9504bb2f6f87c65ff68074ae787831e\"",
+      "Content-Type": "application/json; charset=utf-8",
+      "Transfer-Encoding": "chunked",
+      "Connection": "keep-alive",
+      "Cache-Control": "max-age=0, private, must-revalidate",
+      "Referrer-Policy": "strict-origin-when-cross-origin",
+      "Location": "https://db-api.osc-st-fr1.st-sc.fr/api/operations/63bef2179307d55a9658cd99"
+    },
+    "json_body": {
+      "message": "Database upgrade to 7.0.5-1 is pending",
+      "id": "6335961fb07f4c000fe7461c",
+      "created_at": "2022-09-29T12:57:03.372Z",
+      "updated_at": "2022-09-29T12:57:03.372Z",
+      "database_type_id": "5eea3345d6f2bd5a55e2aad0",
+      "major": 7,
+      "minor": 0,
+      "patch": 5,
+      "build": 1,
+      "features": [
+        "tls"
+      ],
+      "release_number": 330,
+      "allowed_plugins": null,
+      "warning_message": ""
+    }
+  }
+}
diff --git a/samples/regional_database/databases/upgrade-400.json b/samples/regional_database/databases/upgrade-400.json
new file mode 100644
index 0000000..d440c20
--- /dev/null
+++ b/samples/regional_database/databases/upgrade-400.json
@@ -0,0 +1,24 @@
+{
+  "path": "/databases/63bfe3b600deff4f0516cc12/upgrade",
+  "method": "post",
+  "request": {
+    "headers": {
+      "Authorization": "Bearer the-bearer-token"
+    }
+  },
+  "response": {
+    "status": 400,
+    "headers": {
+      "Date": "Fri, 29 May 2020 13:08:59 GMT",
+      "Etag": "W/\"a9504bb2f6f87c65ff68074ae787831e\"",
+      "Content-Type": "application/json; charset=utf-8",
+      "Transfer-Encoding": "chunked",
+      "Connection": "keep-alive",
+      "Cache-Control": "max-age=0, private, must-revalidate",
+      "Referrer-Policy": "strict-origin-when-cross-origin"
+    },
+    "json_body": {
+      "error": "unauthorized"
+    }
+  }
+}
diff --git a/spec/scalingo/regional_database/databases_spec.rb b/spec/scalingo/regional_database/databases_spec.rb
index 2897cdc..18d035a 100644
--- a/spec/scalingo/regional_database/databases_spec.rb
+++ b/spec/scalingo/regional_database/databases_spec.rb
@@ -20,4 +20,20 @@
       it_behaves_like "a client error"
     end
   end
+
+  describe_method "upgrade" do
+    context "success" do
+      let(:arguments) { [meta[:id]] }
+      let(:stub_pattern) { "upgrade-202" }
+
+      it_behaves_like "a singular object response", 202
+    end
+
+    context "failure" do
+      let(:arguments) { [meta[:id]] }
+      let(:stub_pattern) { "upgrade-400" }
+
+      it_behaves_like "a client error"
+    end
+  end
 end