diff --git a/gallery_dl/extractor/luscious.py b/gallery_dl/extractor/luscious.py
index 879d38b2..a73eb86b 100644
--- a/gallery_dl/extractor/luscious.py
+++ b/gallery_dl/extractor/luscious.py
@@ -62,7 +62,7 @@ class LusciousAlbumExtractor(LusciousBase, GalleryExtractor):
     test = (
         ("https://luscious.net/albums/okinami-no-koigokoro_277031/", {
             "url": "7e4984a271a1072ac6483e4228a045895aff86f3",
-            "keyword": "ab4e5b71583fd439b4c8012a642aa8b58d8d0758",
+            "keyword": "07c0b915f2ab1cc3bbf28b76e7950fccee1213f3",
             "content": "b3a747a6464509440bd0ff6d1267e6959f8d6ff3",
         }),
         ("https://luscious.net/albums/virgin-killer-sweater_282582/", {
diff --git a/gallery_dl/extractor/reactor.py b/gallery_dl/extractor/reactor.py
index 59d502ae..f97454b7 100644
--- a/gallery_dl/extractor/reactor.py
+++ b/gallery_dl/extractor/reactor.py
@@ -117,6 +117,8 @@ class ReactorExtractor(SharedConfigMixin, Extractor):
             url = text.extract(image, ' src="', '"')[0]
             if not url:
                 continue
+            if url.startswith("//"):
+                url = "http:" + url
             width = text.extract(image, ' width="', '"')[0]
             height = text.extract(image, ' height="', '"')[0]
             image_id = url.rpartition("-")[2].partition(".")[0]
@@ -268,8 +270,8 @@ class JoyreactorPostExtractor(ReactorPostExtractor):
             "keyword": "dbe148d576f2fc9431020c557ddb78f449e48c47",
         }),
         ("http://joyreactor.com/post/3668724", {  # youtube embed
-            "url": "be2589e2e8f3ffcaf41b34bc28bfad850ccea34a",
-            "keyword": "da61b9e2887db95759950df5fb89c9d32f8e7651",
+            "url": "bf1666eddcff10c9b58f6be63fa94e4e13074214",
+            "keyword": "989112c7888e9cc80fd35870180c6c98165d953b",
         }),
         ("http://joyreactor.cc/post/1299", {  # "malformed" JSON
             "url": "ac900743ed7cf1baf3db3b531c3bc414bf1ffcde",
diff --git a/gallery_dl/extractor/wikiart.py b/gallery_dl/extractor/wikiart.py
index b9c223c2..463733fd 100644
--- a/gallery_dl/extractor/wikiart.py
+++ b/gallery_dl/extractor/wikiart.py
@@ -70,7 +70,7 @@ class WikiartArtistExtractor(WikiartExtractor):
     pattern = BASE_PATTERN + r"/(?!\w+-by-)([\w-]+)"
     test = ("https://www.wikiart.org/en/thomas-cole", {
         "url": "f1eee8158f5b8b7380382ab730a8f53884715c8b",
-        "keyword": "b62678394ce645815963883d5c9642255307225f",
+        "keyword": "c61f5a4774b977106000e9554d19cfb9438a7032",
     })
 
     def __init__(self, match):