diff --git a/dev/Makefile b/dev/Makefile
index 7c644802..7f75b630 100644
--- a/dev/Makefile
+++ b/dev/Makefile
@@ -10,8 +10,3 @@ down:
 .PHONY: up
 up:
 	podman-compose up --detach
-	sleep 2
-	podman-compose exec db psql \
-	  --user=firefish \
-	  --dbname=firefish_db \
-	  --command='CREATE EXTENSION pgroonga;'
diff --git a/dev/docker-compose.yml b/dev/docker-compose.yml
index 8059ab14..4c616147 100644
--- a/dev/docker-compose.yml
+++ b/dev/docker-compose.yml
@@ -14,3 +14,5 @@ services:
       - "POSTGRES_DB=firefish_db"
     ports:
       - "5432:5432"
+    volumes:
+      - "../neko/pgroonga.sql:/docker-entrypoint-initdb.d/pgroonga.sql:ro"
diff --git a/docker-compose.example.yml b/docker-compose.example.yml
index fbad1f21..91b3a7d9 100644
--- a/docker-compose.example.yml
+++ b/docker-compose.example.yml
@@ -40,6 +40,7 @@ services:
       - .config/docker.env
     volumes:
       - ./db:/var/lib/postgresql/data
+      - ./neko/pgroonga.sql:/docker-entrypoint-initdb.d/pgroonga.sql:ro
 
 networks:
   calcnet:
diff --git a/neko/pgroonga.sql b/neko/pgroonga.sql
new file mode 100644
index 00000000..11418be3
--- /dev/null
+++ b/neko/pgroonga.sql
@@ -0,0 +1 @@
+CREATE EXTENSION pgroonga;