diff --git a/src/main/java/org/ntlab/acanthus_server/entities/package-info.java b/src/main/java/org/ntlab/acanthus_server/entities/package-info.java
new file mode 100644
index 0000000..cfbc710
--- /dev/null
+++ b/src/main/java/org/ntlab/acanthus_server/entities/package-info.java
@@ -0,0 +1,4 @@
+/*
+ * 実体（entity）用のパッケージ
+ */
+package org.ntlab.acanthus_server.entities;
\ No newline at end of file
diff --git a/src/main/java/org/ntlab/acanthus_server/models/package-info.java b/src/main/java/org/ntlab/acanthus_server/models/package-info.java
new file mode 100644
index 0000000..8036805
--- /dev/null
+++ b/src/main/java/org/ntlab/acanthus_server/models/package-info.java
@@ -0,0 +1,4 @@
+/*
+ * モデル用のパッケージ
+ */
+package org.ntlab.acanthus_server.models;
\ No newline at end of file
diff --git a/src/main/java/org/ntlab/acanthus_server/resources/accounts/package-info.java b/src/main/java/org/ntlab/acanthus_server/resources/accounts/package-info.java
new file mode 100644
index 0000000..ba597da
--- /dev/null
+++ b/src/main/java/org/ntlab/acanthus_server/resources/accounts/package-info.java
@@ -0,0 +1,4 @@
+/*
+ * accounts系の Rest APIs 用のパッケージ
+ */
+package org.ntlab.acanthus_server.resources.accounts;
\ No newline at end of file
diff --git a/src/main/java/org/ntlab/acanthus_server/resources/gallery/package-info.java b/src/main/java/org/ntlab/acanthus_server/resources/gallery/package-info.java
new file mode 100644
index 0000000..4a52633
--- /dev/null
+++ b/src/main/java/org/ntlab/acanthus_server/resources/gallery/package-info.java
@@ -0,0 +1,4 @@
+/*
+ * gallery系の Rest APIs 用のパッケージ
+ */
+package org.ntlab.acanthus_server.resources.gallery;
\ No newline at end of file