diff --git a/komga-tray/src/main/resources/application-mac.yml b/komga-tray/src/main/resources/application-mac.yml
index a4096821..699c7343 100644
--- a/komga-tray/src/main/resources/application-mac.yml
+++ b/komga-tray/src/main/resources/application-mac.yml
@@ -4,3 +4,9 @@ logging:
 komga:
   config-dir: ${user.home}/Library/Application Support/Komga
   kobo.kepubify-path: kepubify
+spring:
+  config:
+    import:
+      - "optional:file:${komga.config-dir}/application.yml"
+      - "optional:file:${komga.config-dir}/application.yaml"
+      - "optional:file:${komga.config-dir}/application.properties"
diff --git a/komga-tray/src/main/resources/application-windows.yml b/komga-tray/src/main/resources/application-windows.yml
index 98b5fc5b..19d7d26d 100644
--- a/komga-tray/src/main/resources/application-windows.yml
+++ b/komga-tray/src/main/resources/application-windows.yml
@@ -1,3 +1,9 @@
 komga:
   config-dir: ${LOCALAPPDATA}/Komga
   kobo.kepubify-path: kepubify.exe
+spring:
+  config:
+    import:
+      - "optional:file:${komga.config-dir}/application.yml"
+      - "optional:file:${komga.config-dir}/application.yaml"
+      - "optional:file:${komga.config-dir}/application.properties"
diff --git a/komga/src/main/resources/application-dev.yml b/komga/src/main/resources/application-dev.yml
index 6ab95bf7..0dc939ec 100644
--- a/komga/src/main/resources/application-dev.yml
+++ b/komga/src/main/resources/application-dev.yml
@@ -20,6 +20,8 @@ logging:
 #    org.springframework.boot.autoconfigure: DEBUG
 #    org.springframework.security.web.FilterChainProxy: DEBUG
 #    org.springframework.security.web.authentication.rememberme: DEBUG
+#    org.springframework.boot.context.config.ConfigDataEnvironment: TRACE
+#    org.springframework.boot.context.config.ConfigDataEnvironmentPostProcessor: TRACE
   logback:
     rollingpolicy:
       max-history: 1