diff --git a/.gitmodules b/.gitmodules
deleted file mode 100644
index 783d98b5c..000000000
--- a/.gitmodules
+++ /dev/null
@@ -1,3 +0,0 @@
-[submodule "build/openapi-extractor"]
-	path = build/openapi-extractor
-	url = https://github.com/nextcloud/openapi-extractor
diff --git a/Makefile b/Makefile
index d532a2fc4..e5c59eea2 100644
--- a/Makefile
+++ b/Makefile
@@ -30,12 +30,7 @@ get-server-sources:
 	cd build && sh get-server-sources.sh $(DRONE_BRANCH)
 
 openapi-spec: get-server-sources
-	git submodule update --init
-	cd build/openapi-extractor && composer install
-	cd build && ./openapi-extractor/merge-specs \
-		--core server/core/openapi.json \
-		--merged ../developer_manual/_static/openapi.json \
-		$$(ls server/apps/*/openapi.json)
+	cp build/server/openapi.json developer_manual/_static/openapi.json
 	cd developer_manual/_static && \
 		wget https://unpkg.com/@stoplight/elements@8.1.0/web-components.min.js -O stoplight-elements.js && \
 		wget https://unpkg.com/@stoplight/elements@8.1.0/styles.min.css -O stoplight-elements.css
diff --git a/build/openapi-extractor b/build/openapi-extractor
deleted file mode 160000
index d99e9c0fb..000000000
--- a/build/openapi-extractor
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit d99e9c0fbaa6502a704d53d4ca8b7566566ab4be