diff --git a/PKG-INFO b/PKG-INFO
index 386f308d8..a017f83dc 100644
--- a/PKG-INFO
+++ b/PKG-INFO
@@ -4,5 +4,5 @@ Author: Martin Blais
 Author-Email: blais@furius.ca
 ChangeLog: http://furius.ca/beancount/CHANGES
 Bugs-Reporting: mailto:blais@furius.ca
-Download-Snapshots: http://bitbucket.org/blais/beancount
+Download-Snapshots: https://bitbucket.org/blais/beancount
 License: GNU GPLv2 only
diff --git a/README b/README
index e52c81cc5..417d2f238 100644
--- a/README
+++ b/README
@@ -42,7 +42,7 @@ Download & Installation
 You can obtain the source code from the official Mercurial repository on
 BitBucket:
 
-  | http://bitbucket.org/blais/beancount/
+  | https://bitbucket.org/blais/beancount/
 
 See the `Installing Beancount`__ document for more details.
 
@@ -54,7 +54,7 @@ Filing Bugs
 
 Tickets can be filed at on the BitBucket project page:
 
-  http://bitbucket.org/blais/beancount/issues
+  https://bitbucket.org/blais/beancount/issues
 
 
 Copyright and License
diff --git a/TODO b/TODO
index 98ad1f1f5..5a1161417 100644
--- a/TODO
+++ b/TODO
@@ -3862,7 +3862,7 @@ http://furius.ca/beancount/doc/proposal-query
   - Make the parser reentrant [2014-08-02]. This is _not_ a difficult task.
 
     * Follow this:
-      http://www.lemoda.net/c/reentrant-parser/
+      https://www.lemoda.net/c/reentrant-parser/
       http://flex.sourceforge.net/manual/Extra-Data.html
       to remove all globals from my lexer and make it truly reentrant and free of globals.
 
@@ -3877,7 +3877,7 @@ http://furius.ca/beancount/doc/proposal-query
 
       You also need to redefine yyerror() accordingly. I've done it and it
       works, it's simple, it's a 20 minute change:
-      http://www.gnu.org/software/bison/manual/html_node/Parser-Function.html
+      https://www.gnu.org/software/bison/manual/html_node/Parser-Function.html
 
     * You also need to make the lexer reentrant:
       http://flex.sourceforge.net/manual/Reentrant-Overview.html#Reentrant-Overview
@@ -4037,7 +4037,7 @@ http://furius.ca/beancount/doc/proposal-query
 
 ** Financial Ratio Analysis
 
-  - Add these: http://www.csun.edu/~bjc20362/Controlling-2.pdf
+  - Add these: https://www.csun.edu/~bjc20362/Controlling-2.pdf
 
 ** Trades
 
@@ -4229,7 +4229,7 @@ http://furius.ca/beancount/doc/proposal-query
 
   - Move the TreeMaps experimental script for Expenses and Assets subtrees into
     the bean-web codebase:
-    http://bost.ocks.org/mike/treemap/
+    https://bost.ocks.org/mike/treemap/
     (Or maybe that would just be left for fava.)
 
 ** Rendering Documents
diff --git a/appveyor.yml b/appveyor.yml
index b7e3f2257..add2813b3 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -3,7 +3,7 @@ environment:
   matrix:
 
     # For Python versions available on Appveyor, see
-    # http://www.appveyor.com/docs/installed-software#python
+    # https://www.appveyor.com/docs/installed-software#python
     # The list here is complete (excluding Python 2.6, which
     # isn't covered by this document) at the time of writing.
 
diff --git a/beancount/parser/grammar.y b/beancount/parser/grammar.y
index 87136f967..7e5721ff0 100644
--- a/beancount/parser/grammar.y
+++ b/beancount/parser/grammar.y
@@ -240,7 +240,7 @@ const char* getTokenName(int token);
 
 /* Operator precedence.
  * This is pulled straight out of the textbook example:
- * http://www.gnu.org/software/bison/manual/html_node/Infix-Calc.html#Infix-Calc
+ * https://www.gnu.org/software/bison/manual/html_node/Infix-Calc.html#Infix-Calc
  */
 %left MINUS PLUS
 %left ASTERISK SLASH
diff --git a/beancount/prices/sources/oanda.py b/beancount/prices/sources/oanda.py
index cf958c5d9..3eea2a13c 100644
--- a/beancount/prices/sources/oanda.py
+++ b/beancount/prices/sources/oanda.py
@@ -3,7 +3,7 @@
 Valid tickers are in the form "XXX_YYY", such as "EUR_USD".
 
 Here is the API documentation:
-http://developer.oanda.com/rest-live/rates/
+https://developer.oanda.com/rest-live/rates/
 
 For example:
 https://api-fxtrade.oanda.com/v1/candles?instrument=EUR_USD&granularity=D&start=2016-03-27T00%3A00%3A00Z&end=2016-04-04T00%3A00%3A00Z&candleFormat=midpoint
diff --git a/beancount/reports/gviz.py b/beancount/reports/gviz.py
index bb7f5d10d..bf92e0a6b 100644
--- a/beancount/reports/gviz.py
+++ b/beancount/reports/gviz.py
@@ -27,7 +27,7 @@ def gviz_timeline(time_array, data_array_map, css_id='chart'):
     # Write preamble.
     oss = io.StringIO()
 
-    oss.write('<script src="http://www.google.com/jsapi" type="text/javascript">'
+    oss.write('<script src="https://www.google.com/jsapi" type="text/javascript">'
               '</script>\n')
     oss.write('<script type="text/javascript">\n')
 
diff --git a/beancount/utils/misc_utils.py b/beancount/utils/misc_utils.py
index aa0de41fc..84e2bca80 100644
--- a/beancount/utils/misc_utils.py
+++ b/beancount/utils/misc_utils.py
@@ -373,7 +373,7 @@ def import_curses():
     """
     # Note: There's a recipe for getting terminal size on Windows here, without
     # curses, I should probably implement that at some point:
-    # http://stackoverflow.com/questions/263890/how-do-i-find-the-width-height-of-a-terminal-window
+    # https://stackoverflow.com/questions/263890/how-do-i-find-the-width-height-of-a-terminal-window
     # Also, consider just using 'blessings' instead, which provides this across
     # multiple platforms.
     import curses
diff --git a/beancount/web/web.html b/beancount/web/web.html
index 010a4c341..3995ce2db 100644
--- a/beancount/web/web.html
+++ b/beancount/web/web.html
@@ -3,9 +3,9 @@
   <head>
     <meta content="text/html; charset=utf-8" http-equiv="Content-Type" />
 
-    <link href="http://fonts.googleapis.com/css?family=Roboto+Condensed:400italic,700italic,700,400" rel="stylesheet" type="text/css" />
-    <link href="http://fonts.googleapis.com/css?family=Roboto:400italic,700italic,700,400" rel="stylesheet" type="text/css" />
-    <link href='http://fonts.googleapis.com/css?family=Droid+Sans+Mono' rel='stylesheet' type='text/css' />
+    <link href="https://fonts.googleapis.com/css?family=Roboto+Condensed:400italic,700italic,700,400" rel="stylesheet" type="text/css" />
+    <link href="https://fonts.googleapis.com/css?family=Roboto:400italic,700italic,700,400" rel="stylesheet" type="text/css" />
+    <link href='https://fonts.googleapis.com/css?family=Droid+Sans+Mono' rel='stylesheet' type='text/css' />
 
     <link href="/resources/web.css" rel="stylesheet" type="text/css" />
     <title>{{title}}: {{pagetitle}}</title>
diff --git a/experiments/docs/framedocs.py b/experiments/docs/framedocs.py
index fcf44a86d..eddbb3e98 100755
--- a/experiments/docs/framedocs.py
+++ b/experiments/docs/framedocs.py
@@ -28,7 +28,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
   <head>
-    <link href='http://fonts.googleapis.com/css?family=Bree+Serif' rel='stylesheet' type='text/css'>
+    <link href='https://fonts.googleapis.com/css?family=Bree+Serif' rel='stylesheet' type='text/css'>
     <style>
 html, body {{ min-height:100%; padding:0; margin:0; }}
 #wrapper {{ padding-top: 24px; position:absolute; top:0; bottom:0; left:0; right:0; }}
diff --git a/experiments/options/option-name.py b/experiments/options/option-name.py
index e0b1b9101..5b4ecb47e 100755
--- a/experiments/options/option-name.py
+++ b/experiments/options/option-name.py
@@ -2,7 +2,7 @@
 """Parse and/or convert option names given on the command-line.
 
 This requires the Ameritrade package.
-http://bitbucket.org/blais/ameritrade/
+https://bitbucket.org/blais/ameritrade/
 """
 __copyright__ = "Copyright (C) 2018  Martin Blais"
 __license__ = "GNU GPLv2"
diff --git a/experiments/v3/WORKSPACE b/experiments/v3/WORKSPACE
index 19da1e26f..544cb89fd 100644
--- a/experiments/v3/WORKSPACE
+++ b/experiments/v3/WORKSPACE
@@ -164,8 +164,8 @@ http_archive(
     sha256 = "c3e5e9fdd5004dcb542feda5ee4f0ff0744628baf8ed2dd5d66f8ca1197cb1a1",
     strip_prefix = "zlib-1.2.11",
     urls = [
-        "http://mirror.bazel.build/zlib.net/fossils/zlib-1.2.11.tar.gz",
-        "http://zlib.net/fossils/zlib-1.2.11.tar.gz",
+        "https://mirror.bazel.build/zlib.net/fossils/zlib-1.2.11.tar.gz",
+        "https://zlib.net/fossils/zlib-1.2.11.tar.gz",
     ],
 )
 
diff --git a/index.html b/index.html
index 7d7666910..317e4bdba 100644
--- a/index.html
+++ b/index.html
@@ -57,7 +57,7 @@ <h1><a class="toc-backref" href="#id4">Download &amp; Installation</a></h1>
 BitBucket:</p>
 <blockquote>
 <div class="line-block">
-<div class="line"><a class="reference external" href="http://bitbucket.org/blais/beancount/">http://bitbucket.org/blais/beancount/</a></div>
+<div class="line"><a class="reference external" href="https://bitbucket.org/blais/beancount/">https://bitbucket.org/blais/beancount/</a></div>
 </div>
 </blockquote>
 <p>See the <a class="reference external" href="http://furius.ca/beancount/doc/install">Installing Beancount</a> document for more details.</p>
@@ -66,7 +66,7 @@ <h1><a class="toc-backref" href="#id4">Download &amp; Installation</a></h1>
 <h1><a class="toc-backref" href="#id5">Filing Bugs</a></h1>
 <p>Tickets can be filed at on the BitBucket project page:</p>
 <blockquote>
-<a class="reference external" href="http://bitbucket.org/blais/beancount/issues">http://bitbucket.org/blais/beancount/issues</a></blockquote>
+<a class="reference external" href="https://bitbucket.org/blais/beancount/issues">https://bitbucket.org/blais/beancount/issues</a></blockquote>
 </div>
 <div class="section" id="copyright-and-license">
 <h1><a class="toc-backref" href="#id6">Copyright and License</a></h1>
diff --git a/setup.py b/setup.py
index 7abb4579f..5ff635fe6 100755
--- a/setup.py
+++ b/setup.py
@@ -41,7 +41,7 @@
             # database definitions as well, although it is inferior to pytz, but
             # because it can use the OS timezone database in the Windows
             # registry. See this article for context:
-            # http://www.assert.cc/2014/05/25/which-python-time-zone-library.html
+            # https://www.assert.cc/2014/05/25/which-python-time-zone-library.html
             # However, for creating offset timezones, we use the datetime.timezone
             # helper class because it is built-in.
             # Where this matters is for price source fetchers.
@@ -230,7 +230,7 @@ def get_git_changeset():
     author="Martin Blais",
     author_email="blais@furius.ca",
     url="http://furius.ca/beancount",
-    download_url="http://bitbucket.org/blais/beancount",
+    download_url="https://bitbucket.org/blais/beancount",
 
     packages = [
         'beancount',