diff --git a/CHANGELOG.MD b/CHANGELOG.MD
index f34233f78..4d6ec45ef 100644
--- a/CHANGELOG.MD
+++ b/CHANGELOG.MD
@@ -2,6 +2,12 @@
 
 更新日志文档，版本顺序从新到旧，最新版本在最前(上)面。
 
+# 0.15.4
+
+## 主题
+
+- 修复默认主题剧集序号选择问题
+
 # 0.15.3
 
 ## 问题修复
diff --git a/gradle.properties b/gradle.properties
index 907aa7a49..69b2c63b8 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1 +1 @@
-version=0.15.3
+version=0.15.4
diff --git a/server/src/main/java/run/ikaros/server/controller/SubjectController.java b/server/src/main/java/run/ikaros/server/controller/SubjectController.java
index 925c66c10..29af3c607 100644
--- a/server/src/main/java/run/ikaros/server/controller/SubjectController.java
+++ b/server/src/main/java/run/ikaros/server/controller/SubjectController.java
@@ -65,7 +65,7 @@ public Mono<String> index(Model model, Integer page, Integer size, SubjectType t
      */
     @GetMapping("/{id}")
     public Mono<String> findById(@PathVariable("id") Long id,
-                                 @RequestParam("episode") Integer epSeq, Model model) {
+                                 @RequestParam("episode") Float epSeq, Model model) {
         return subjectService.findById(id)
             .flatMap(subject -> addEpisodesResourcesAttachmentIdSubtitleMap2Model(subject, model))
             .map(subject -> model.addAttribute("subject", subject))
diff --git a/server/src/main/resources/templates/simple b/server/src/main/resources/templates/simple
index a48c3ce3b..0cc33839f 160000
--- a/server/src/main/resources/templates/simple
+++ b/server/src/main/resources/templates/simple
@@ -1 +1 @@
-Subproject commit a48c3ce3b9b9be30f54165e37d0201141edb12b2
+Subproject commit 0cc33839f19f36b9a521b15f2fc988382e044b6e