diff --git a/gallery_dl/extractor/imagehosts.py b/gallery_dl/extractor/imagehosts.py
index d7d6a5a2..d78b3d90 100644
--- a/gallery_dl/extractor/imagehosts.py
+++ b/gallery_dl/extractor/imagehosts.py
@@ -286,7 +286,7 @@ class ImgspiceImageExtractor(ImagehostImageExtractor):
 
     def get_info(self, page):
         filename, pos = text.extract(page, '<td nowrap>', '</td>')
-        url     , pos = text.extract(page, '<img src="http://img', '"', pos)
+        url     , pos = text.extract(page, '<img src="https://img', '"', pos)
         return "http://img" + url, text.unescape(filename)
 
 
diff --git a/test/test_extractors.py b/test/test_extractors.py
index b5202681..0f9079d2 100644
--- a/test/test_extractors.py
+++ b/test/test_extractors.py
@@ -66,8 +66,11 @@ skip = [
     "exhentai", "kissmanga", "mangafox", "dynastyscans", "nijie",
     "archivedmoe", "archiveofsins", "thebarchive",
     # temporary issues
+    "imgtrex",
     "luscious",  # "high load"
     "pawoo",
+    "coreimg",  # "Name or service not known"
+    "mangahere",  # unstable; sometimes sends empty responses
 ]
 # enable selective testing for direct calls
 if __name__ == '__main__' and len(sys.argv) > 1: