diff --git a/lib/_http_server.js b/lib/_http_server.js
index 680fadba715f07..842bfb5eb7a0d5 100644
--- a/lib/_http_server.js
+++ b/lib/_http_server.js
@@ -351,7 +351,7 @@ function Server(options, requestListener) {
 
   // Similar option to this. Too lazy to write my own docs.
   // http://www.squid-cache.org/Doc/config/half_closed_clients/
-  // http://wiki.squid-cache.org/SquidFaq/InnerWorkings#What_is_a_half-closed_filedescriptor.3F
+  // https://wiki.squid-cache.org/SquidFaq/InnerWorkings#What_is_a_half-closed_filedescriptor.3F
   this.httpAllowHalfOpen = false;
 
   this.on('connection', connectionListener);
diff --git a/lib/https.js b/lib/https.js
index 1d3a6e5024b65b..17a89c2f0bc0bb 100644
--- a/lib/https.js
+++ b/lib/https.js
@@ -55,7 +55,7 @@ function Server(opts, requestListener) {
 
   if (!opts.ALPNProtocols) {
     // http/1.0 is not defined as Protocol IDs in IANA
-    // http://www.iana.org/assignments/tls-extensiontype-values
+    // https://www.iana.org/assignments/tls-extensiontype-values
     //       /tls-extensiontype-values.xhtml#alpn-protocol-ids
     opts.ALPNProtocols = ['http/1.1'];
   }
diff --git a/lib/internal/child_process.js b/lib/internal/child_process.js
index 6438e6b650b814..85ce63a9660f86 100644
--- a/lib/internal/child_process.js
+++ b/lib/internal/child_process.js
@@ -944,7 +944,7 @@ function getValidStdio(stdio, sync) {
   // At least 3 stdio will be created
   // Don't concat() a new Array() because it would be sparse, and
   // stdio.reduce() would skip the sparse elements of stdio.
-  // See http://stackoverflow.com/a/5501711/3561
+  // See https://stackoverflow.com/a/5501711/3561
   while (stdio.length < 3) stdio.push(undefined);
 
   // Translate stdio into C++-readable form
diff --git a/lib/internal/source_map/source_map.js b/lib/internal/source_map/source_map.js
index 2cd70c5c944e19..7d21e02429a086 100644
--- a/lib/internal/source_map/source_map.js
+++ b/lib/internal/source_map/source_map.js
@@ -113,7 +113,8 @@ class StringCharIterator {
 }
 
 /**
- * Implements Source Map V3 model. See http://code.google.com/p/closure-compiler/wiki/SourceMaps
+ * Implements Source Map V3 model.
+ * See https://github.com/google/closure-compiler/wiki/Source-Maps
  * for format description.
  * @constructor
  * @param {string} sourceMappingURL
diff --git a/lib/internal/tty.js b/lib/internal/tty.js
index 44d51737008eb0..1ebd09193ef57e 100644
--- a/lib/internal/tty.js
+++ b/lib/internal/tty.js
@@ -125,7 +125,7 @@ function getColorDepth(env = process.env) {
       env.NO_COLOR !== undefined ||
       // The "dumb" special terminal, as defined by terminfo, doesn't support
       // ANSI color control codes.
-      // See http://invisible-island.net/ncurses/terminfo.ti.html#toc-_Specials
+      // See https://invisible-island.net/ncurses/terminfo.ti.html#toc-_Specials
       env.TERM === 'dumb') {
     return COLORS_2;
   }
diff --git a/lib/internal/util/inspect.js b/lib/internal/util/inspect.js
index 03e62226236df3..824c5961e9512c 100644
--- a/lib/internal/util/inspect.js
+++ b/lib/internal/util/inspect.js
@@ -338,7 +338,7 @@ ObjectDefineProperty(inspect, 'defaultOptions', {
   }
 });
 
-// Set Graphics Rendition http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
+// Set Graphics Rendition https://en.wikipedia.org/wiki/ANSI_escape_code#graphics
 // Each color consists of an array with the color code as first entry and the
 // reset code as second entry.
 const defaultFG = 39;
@@ -2051,7 +2051,7 @@ if (internalBinding('config').hasIntl) {
    */
   const isFullWidthCodePoint = (code) => {
     // Code points are partially derived from:
-    // http://www.unicode.org/Public/UNIDATA/EastAsianWidth.txt
+    // https://www.unicode.org/Public/UNIDATA/EastAsianWidth.txt
     return code >= 0x1100 && (
       code <= 0x115f ||  // Hangul Jamo
       code === 0x2329 || // LEFT-POINTING ANGLE BRACKET
diff --git a/lib/querystring.js b/lib/querystring.js
index f057226f08b51f..05cca60fc4c57f 100644
--- a/lib/querystring.js
+++ b/lib/querystring.js
@@ -140,7 +140,7 @@ const noEscape = [
   1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0  // 112 - 127
 ];
 // QueryString.escape() replaces encodeURIComponent()
-// http://www.ecma-international.org/ecma-262/5.1/#sec-15.1.3.4
+// https://www.ecma-international.org/ecma-262/5.1/#sec-15.1.3.4
 function qsEscape(str) {
   if (typeof str !== 'string') {
     if (typeof str === 'object')
diff --git a/lib/readline.js b/lib/readline.js
index 7d44dd2366cf39..a8f60ac9111e26 100644
--- a/lib/readline.js
+++ b/lib/readline.js
@@ -22,7 +22,7 @@
 // Inspiration for this code comes from Salvatore Sanfilippo's linenoise.
 // https://github.com/antirez/linenoise
 // Reference:
-// * http://invisible-island.net/xterm/ctlseqs/ctlseqs.html
+// * https://invisible-island.net/xterm/ctlseqs/ctlseqs.html
 // * http://www.3waylabs.com/nw/WWW/products/wizcon/vt220.html
 
 'use strict';