diff --git a/cps/db.py b/cps/db.py
index e758dc0a..1e2b1af7 100755
--- a/cps/db.py
+++ b/cps/db.py
@@ -103,11 +103,11 @@ class Identifiers(Base):
         if self.type == "amazon":
             return u"https://amzn.com/{0}".format(self.val)
         elif self.type == "isbn":
-            return u"http://www.worldcat.org/isbn/{0}".format(self.val)
+            return u"https://www.worldcat.org/isbn/{0}".format(self.val)
         elif self.type == "doi":
-            return u"http://dx.doi.org/{0}".format(self.val)
+            return u"https://dx.doi.org/{0}".format(self.val)
         elif self.type == "goodreads":
-            return u"http://www.goodreads.com/book/show/{0}".format(self.val)
+            return u"https://www.goodreads.com/book/show/{0}".format(self.val)
         elif self.type == "douban":
             return u"https://book.douban.com/subject/{0}".format(self.val)
         elif self.type == "google":
@@ -115,7 +115,7 @@ class Identifiers(Base):
         elif self.type == "kobo":
             return u"https://www.kobo.com/ebook/{0}".format(self.val)
         elif self.type == "lubimyczytac":
-            return u" http://lubimyczytac.pl/ksiazka/{0}".format(self.val)
+            return u" https://lubimyczytac.pl/ksiazka/{0}".format(self.val)
         elif self.type == "url":
             return u"{0}".format(self.val)
         else:
diff --git a/cps/kobo.py b/cps/kobo.py
index 3de410d9..7a6c2254 100644
--- a/cps/kobo.py
+++ b/cps/kobo.py
@@ -979,7 +979,7 @@ def NATIVE_KOBO_RESOURCES():
         "blackstone_header": {"key": "x-amz-request-payer", "value": "requester"},
         "book": "https://storeapi.kobo.com/v1/products/books/{ProductId}",
         "book_detail_page": "https://store.kobobooks.com/{culture}/ebook/{slug}",
-        "book_detail_page_rakuten": "http://books.rakuten.co.jp/rk/{crossrevisionid}",
+        "book_detail_page_rakuten": "https://books.rakuten.co.jp/rk/{crossrevisionid}",
         "book_landing_page": "https://store.kobobooks.com/ebooks",
         "book_subscription": "https://storeapi.kobo.com/v1/products/books/subscriptions",
         "categories": "https://storeapi.kobo.com/v1/categories",
@@ -1017,7 +1017,7 @@ def NATIVE_KOBO_RESOURCES():
         "get_tests_request": "https://storeapi.kobo.com/v1/analytics/gettests",
         "giftcard_epd_redeem_url": "https://www.kobo.com/{storefront}/{language}/redeem-ereader",
         "giftcard_redeem_url": "https://www.kobo.com/{storefront}/{language}/redeem",
-        "help_page": "http://www.kobo.com/help",
+        "help_page": "https://www.kobo.com/help",
         "kobo_audiobooks_enabled": "False",
         "kobo_audiobooks_orange_deal_enabled": "False",
         "kobo_audiobooks_subscriptions_enabled": "False",
diff --git a/cps/oauth.py b/cps/oauth.py
index d754dad7..67ef2703 100644
--- a/cps/oauth.py
+++ b/cps/oauth.py
@@ -40,7 +40,7 @@ try:
         Stores and retrieves OAuth tokens using a relational database through
         the `SQLAlchemy`_ ORM.
 
-        .. _SQLAlchemy: http://www.sqlalchemy.org/
+        .. _SQLAlchemy: https://www.sqlalchemy.org/
         """
         def __init__(self, model, session, provider_id,
                      user=None, user_id=None, user_required=None, anon_user=None,