diff --git a/docusaurus.config.js b/docusaurus.config.js
index 8d63556b..b982d4b7 100644
--- a/docusaurus.config.js
+++ b/docusaurus.config.js
@@ -82,11 +82,11 @@ const globalVariables = {
     goVersion: "1.26",
     minGoVersion: "1.26",
     minNodeVersion: "22",
-    version: "1.26.3",
-    sourceVersion: "v1.26.3",
+    version: "1.26.4",
+    sourceVersion: "v1.26.4",
     sourceBranch: "release/v1.26",
-    dockerVersion: "1.26.3",
-    displayVersion: "1.26.3",
+    dockerVersion: "1.26.4",
+    displayVersion: "1.26.4",
   },
   "1.25": {
     goVersion: "1.25",
@@ -417,7 +417,7 @@ const config = {
             position: "right",
             items: [
               { to: "/api/next/", label: "1.27-dev" },
-              { to: "/api/1.26/", label: "1.26.3" },
+              { to: "/api/1.26/", label: "1.26.4" },
               { to: "/api/1.25/", label: "1.25.5" },
               { to: "/api/1.24/", label: "1.24.7" },
               { to: "/api/1.23/", label: "1.23.8" },
diff --git a/static/swagger-26.json b/static/swagger-26.json
index b77059f7..4e3d3461 100644
--- a/static/swagger-26.json
+++ b/static/swagger-26.json
@@ -17,7 +17,7 @@
       "name": "MIT",
       "url": "http://opensource.org/licenses/MIT"
     },
-    "version": "1.26.3"
+    "version": "1.26.4"
   },
   "basePath": "https://gitea.com/api/v1",
   "paths": {
@@ -26771,10 +26771,14 @@
       "description": "MergePullRequestForm form for merging Pull Request",
       "type": "object",
       "required": [
-        "Do"
+        "do"
       ],
       "properties": {
-        "Do": {
+        "delete_branch_after_merge": {
+          "type": "boolean",
+          "x-go-name": "DeleteBranchAfterMerge"
+        },
+        "do": {
           "type": "string",
           "enum": [
             "merge",
@@ -26783,20 +26787,8 @@
             "squash",
             "fast-forward-only",
             "manually-merged"
-          ]
-        },
-        "MergeCommitID": {
-          "type": "string"
-        },
-        "MergeMessageField": {
-          "type": "string"
-        },
-        "MergeTitleField": {
-          "type": "string"
-        },
-        "delete_branch_after_merge": {
-          "type": "boolean",
-          "x-go-name": "DeleteBranchAfterMerge"
+          ],
+          "x-go-name": "Do"
         },
         "force_merge": {
           "type": "boolean",
@@ -26806,6 +26798,18 @@
           "type": "string",
           "x-go-name": "HeadCommitID"
         },
+        "merge_commit_id": {
+          "type": "string",
+          "x-go-name": "MergeCommitID"
+        },
+        "merge_message_field": {
+          "type": "string",
+          "x-go-name": "MergeMessageField"
+        },
+        "merge_title_field": {
+          "type": "string",
+          "x-go-name": "MergeTitleField"
+        },
         "merge_when_checks_succeed": {
           "type": "boolean",
           "x-go-name": "MergeWhenChecksSucceed"
@@ -31069,4 +31073,4 @@
       "TOTPHeader": []
     }
   ]
-}
+}
\ No newline at end of file
diff --git a/update_api_docs.sh b/update_api_docs.sh
index b0f3690e..d9497003 100755
--- a/update_api_docs.sh
+++ b/update_api_docs.sh
@@ -25,7 +25,7 @@ inplace_sed 's|"version": "{{.SwaggerAppVer}}"|"version": "dev"|' v1_json.tmpl
 inplace_sed 's|"basePath": "{{.SwaggerAppSubUrl}}/api/v1"|"basePath": "https://gitea.com/api/v1"|' v1_json.tmpl
 mv v1_json.tmpl static/swagger-latest.json
 
-for ver in '1.26.3' '1.25.5' '1.24.7' '1.23.8' '1.22.6'; do
+for ver in '1.26.4' '1.25.5' '1.24.7' '1.23.8' '1.22.6'; do
   curl --silent --output v1_json.tmpl https://raw.githubusercontent.com/go-gitea/gitea/refs/tags/v${ver}/templates/swagger/v1_json.tmpl
   inplace_sed "s|\"version\": \"{{.SwaggerAppVer}}\"|\"version\": \"${ver}\"|" v1_json.tmpl
   inplace_sed 's|"basePath": "{{.SwaggerAppSubUrl}}/api/v1"|"basePath": "https://gitea.com/api/v1"|' v1_json.tmpl