diff --git a/app/blueprints/api/endpoints.py b/app/blueprints/api/endpoints.py
index 72533f3..32bab02 100644
--- a/app/blueprints/api/endpoints.py
+++ b/app/blueprints/api/endpoints.py
@@ -31,7 +31,8 @@ from app.querybuilder import QueryBuilder
 from app.utils import is_package_page, get_int_or_abort, url_set_query, abs_url, isYes
 from . import bp
 from .auth import is_api_authd
-from .support import error, api_create_vcs_release, api_create_zip_release, api_create_screenshot, api_order_screenshots, api_edit_package
+from .support import error, api_create_vcs_release, api_create_zip_release, api_create_screenshot, \
+	api_order_screenshots, api_edit_package, api_set_cover_image
 from functools import wraps
 
 
@@ -356,7 +357,7 @@ def order_screenshots(token: APIToken, package: Package):
 		error(401, "Authentication needed")
 
 	if not package.checkPerm(token.owner, Permission.ADD_SCREENSHOTS):
-		error(403, "You do not have the permission to delete screenshots")
+		error(403, "You do not have the permission to change screenshots")
 
 	if not token.canOperateOnPackage(package):
 		error(403, "API token does not have access to the package")
@@ -368,6 +369,28 @@ def order_screenshots(token: APIToken, package: Package):
 	return api_order_screenshots(token, package, request.json)
 
 
+@bp.route("/api/packages/<author>/<name>/screenshots/cover-image/", methods=["POST"])
+@csrf.exempt
+@is_package_page
+@is_api_authd
+@cors_allowed
+def set_cover_image(token: APIToken, package: Package):
+	if not token:
+		error(401, "Authentication needed")
+
+	if not package.checkPerm(token.owner, Permission.ADD_SCREENSHOTS):
+		error(403, "You do not have the permission to change screenshots")
+
+	if not token.canOperateOnPackage(package):
+		error(403, "API token does not have access to the package")
+
+	json = request.json
+	if json is None or not isinstance(json, dict) or "cover_image" not in json:
+		error(400, "Expected body to be an object with cover_image as a key")
+
+	return api_set_cover_image(token, package, request.json["cover_image"])
+
+
 @bp.route("/api/packages/<author>/<name>/reviews/")
 @is_package_page
 @cors_allowed
diff --git a/app/blueprints/api/support.py b/app/blueprints/api/support.py
index d060c02..aa8ff53 100644
--- a/app/blueprints/api/support.py
+++ b/app/blueprints/api/support.py
@@ -19,7 +19,7 @@ from flask import jsonify, abort, make_response, url_for, current_app
 
 from app.logic.packages import do_edit_package
 from app.logic.releases import LogicError, do_create_vcs_release, do_create_zip_release
-from app.logic.screenshots import do_create_screenshot, do_order_screenshots
+from app.logic.screenshots import do_create_screenshot, do_order_screenshots, do_set_cover_image
 from app.models import APIToken, Package, MinetestRelease, PackageScreenshot
 
 
@@ -94,6 +94,17 @@ def api_order_screenshots(token: APIToken, package: Package, order: [any]):
 	})
 
 
+def api_set_cover_image(token: APIToken, package: Package, cover_image):
+	if not token.canOperateOnPackage(package):
+		error(403, "API token does not have access to the package")
+
+	guard(do_set_cover_image)(token.owner, package, cover_image)
+
+	return jsonify({
+		"success": True
+	})
+
+
 def api_edit_package(token: APIToken, package: Package, data: dict, reason: str = "API"):
 	if not token.canOperateOnPackage(package):
 		error(403, "API token does not have access to the package")
diff --git a/app/flatpages/help/api.md b/app/flatpages/help/api.md
index adb1e82..e641ba8 100644
--- a/app/flatpages/help/api.md
+++ b/app/flatpages/help/api.md
@@ -238,6 +238,9 @@ curl -X DELETE https://content.minetest.net/api/packages/username/name/releases/
 * POST `/api/packages/<username>/<name>/screenshots/order/`
     * Requires authentication.
     * Body is a JSON array containing the screenshot IDs in their order.
+* POST `/api/packages/<username>/<name>/screenshots/order/`
+    * Requires authentication.
+    * Body is a JSON dictionary with "cover_image" containing the screenshot ID.
 
 Currently, to get a different size of thumbnail you can replace the number in `/thumbnails/1/` with any number from 1-3.
 The resolutions returned may change in the future, and we may move to a more capable thumbnail generation.
@@ -258,6 +261,11 @@ curl -X DELETE https://content.minetest.net/api/packages/username/name/screensho
 curl -X POST https://content.minetest.net/api/packages/username/name/screenshots/order/ \
     -H "Authorization: Bearer YOURTOKEN" -H "Content-Type: application/json" \
     -d "[13, 2, 5, 7]"
+    
+# Set cover image
+curl -X POST https://content.minetest.net/api/packages/username/name/screenshots/cover-image/ \
+    -H "Authorization: Bearer YOURTOKEN" -H "Content-Type: application/json" \
+    -d "{ 'cover_image': 123 }"
 ```
 
 
diff --git a/app/logic/screenshots.py b/app/logic/screenshots.py
index e8bdc34..9eea434 100644
--- a/app/logic/screenshots.py
+++ b/app/logic/screenshots.py
@@ -66,3 +66,18 @@ def do_order_screenshots(_user: User, package: Package, order: [any]):
 			raise LogicError(400, "Invalid id, not a number: {}".format(json.dumps(ss_id)))
 
 	db.session.commit()
+
+
+def do_set_cover_image(_user: User, package: Package, cover_image):
+	try:
+		cover_image = int(cover_image)
+	except (ValueError, TypeError) as e:
+		raise LogicError(400, "Invalid id, not a number: {}".format(json.dumps(cover_image)))
+
+	for screenshot in package.screenshots.all():
+		if screenshot.id == cover_image:
+			package.cover_image = screenshot
+			db.session.commit()
+			return
+
+	raise LogicError(400, "Unable to find screenshot")