diff --git a/RELEASE-NOTES b/RELEASE-NOTES
index 7774f35306..6eeda9fbd6 100644
--- a/RELEASE-NOTES
+++ b/RELEASE-NOTES
@@ -13,7 +13,7 @@ This release includes the following bugfixes:
  o cmake: fixed when OpenSSL enabled on Windows and schannel detected [2]
  o curl.1: Explain remote-name behavior if file already exists
  o tool_operate: Don't sanitize --output path (Windows) [3]
- o URLs: change all http:// URLs to https://
+ o URLs: change all http:// URLs to https:// in documentation & comments
 
 This release includes the following known bugs:
 
diff --git a/docs/FAQ b/docs/FAQ
index 0f3b15a205..039f6bc80e 100644
--- a/docs/FAQ
+++ b/docs/FAQ
@@ -319,7 +319,7 @@ FAQ
   In May 2012 Daniel did a counting game and came up with a number that may
   be completely wrong or somewhat accurate. Over 500 million!
 
-  See http://daniel.haxx.se/blog/2012/05/16/300m-users/
+  See https://daniel.haxx.se/blog/2012/05/16/300m-users/
 
   1.11 Why don't you update ca-bundle.crt
 
diff --git a/docs/HTTP2.md b/docs/HTTP2.md
index 2a7745eb28..44b5273ddd 100644
--- a/docs/HTTP2.md
+++ b/docs/HTTP2.md
@@ -2,7 +2,7 @@ HTTP/2 with curl
 ================
 
 [HTTP/2 Spec](https://www.rfc-editor.org/rfc/rfc7540.txt)
-[http2 explained](http://daniel.haxx.se/http2/)
+[http2 explained](https://daniel.haxx.se/http2/)
 
 Build prerequisites
 -------------------
diff --git a/docs/LICENSE-MIXING b/docs/LICENSE-MIXING
index e9a57bfa04..68e7156d8f 100644
--- a/docs/LICENSE-MIXING
+++ b/docs/LICENSE-MIXING
@@ -73,7 +73,7 @@ libressl http://www.libressl.org/
         (May be used for SSL/TLS support) As an OpenSSL fork, it has the same
         license as that.
 
-c-ares  http://daniel.haxx.se/projects/c-ares/license.html
+c-ares  https://daniel.haxx.se/projects/c-ares/license.html
 
         (Used for asynchronous name resolves) Uses an MIT license that is very
         liberal and imposes no restrictions on any other library or part you
diff --git a/include/curl/curl.h b/include/curl/curl.h
index 6d9eba72c4..061c570d40 100644
--- a/include/curl/curl.h
+++ b/include/curl/curl.h
@@ -27,7 +27,7 @@
  *   https://curl.haxx.se/libcurl/
  *
  * curl-library mailing list subscription and unsubscription web interface:
- *   http://cool.haxx.se/mailman/listinfo/curl-library/
+ *   https://cool.haxx.se/mailman/listinfo/curl-library/
  */
 
 #include "curlver.h"         /* libcurl version defines   */
diff --git a/include/curl/curlbuild.h.cmake b/include/curl/curlbuild.h.cmake
index b07a06042f..bbb31a9408 100644
--- a/include/curl/curlbuild.h.cmake
+++ b/include/curl/curlbuild.h.cmake
@@ -35,7 +35,7 @@
  *
  * If you think that something actually needs to be changed, adjusted
  * or fixed in this file, then, report it on the libcurl development
- * mailing list: http://cool.haxx.se/mailman/listinfo/curl-library/
+ * mailing list: https://cool.haxx.se/mailman/listinfo/curl-library/
  *
  * This header file shall only export symbols which are 'curl' or 'CURL'
  * prefixed, otherwise public name space would be polluted.
diff --git a/include/curl/curlbuild.h.dist b/include/curl/curlbuild.h.dist
index 0a6a2c2c00..58323d0648 100644
--- a/include/curl/curlbuild.h.dist
+++ b/include/curl/curlbuild.h.dist
@@ -49,7 +49,7 @@
  *
  * If you think that something actually needs to be changed, adjusted
  * or fixed in this file, then, report it on the libcurl development
- * mailing list: http://cool.haxx.se/mailman/listinfo/curl-library/
+ * mailing list: https://cool.haxx.se/mailman/listinfo/curl-library/
  *
  * Try to keep one section per platform, compiler and architecture,
  * otherwise, if an existing section is reused for a different one and
diff --git a/include/curl/curlbuild.h.in b/include/curl/curlbuild.h.in
index 0743655d53..ffab356709 100644
--- a/include/curl/curlbuild.h.in
+++ b/include/curl/curlbuild.h.in
@@ -35,7 +35,7 @@
  *
  * If you think that something actually needs to be changed, adjusted
  * or fixed in this file, then, report it on the libcurl development
- * mailing list: http://cool.haxx.se/mailman/listinfo/curl-library/
+ * mailing list: https://cool.haxx.se/mailman/listinfo/curl-library/
  *
  * This header file shall only export symbols which are 'curl' or 'CURL'
  * prefixed, otherwise public name space would be polluted.
diff --git a/include/curl/curlrules.h b/include/curl/curlrules.h
index 1a9013342e..55d21f68f1 100644
--- a/include/curl/curlrules.h
+++ b/include/curl/curlrules.h
@@ -47,7 +47,7 @@
  * library is properly built and used.
  *
  * You can find further help on the libcurl development mailing list:
- * http://cool.haxx.se/mailman/listinfo/curl-library/
+ * https://cool.haxx.se/mailman/listinfo/curl-library/
  *
  * NOTE 2
  * ------
diff --git a/lib/libcurl.def b/lib/libcurl.def
index e051970b91..e01255725b 100644
--- a/lib/libcurl.def
+++ b/lib/libcurl.def
@@ -4,7 +4,7 @@
 
 LIBRARY		LIBCURL
 
-;DESCRIPTION	'curl libcurl - http://curl.haxx.se'
+;DESCRIPTION	'curl libcurl - https://curl.haxx.se'
 
 EXPORTS
 	curl_easy_cleanup @ 1 ;
diff --git a/lib/mprintf.c b/lib/mprintf.c
index cd1b568564..b6d9a9c557 100644
--- a/lib/mprintf.c
+++ b/lib/mprintf.c
@@ -32,7 +32,7 @@
  *
  * If you ever want truly portable and good *printf() clones, the project that
  * took on from here is named 'Trio' and you find more details on the trio web
- * page at http://daniel.haxx.se/trio/
+ * page at https://daniel.haxx.se/trio/
  */
 
 #include "curl_setup.h"
diff --git a/lib/rawstr.c b/lib/rawstr.c
index 7aa1a46c94..5665ebd361 100644
--- a/lib/rawstr.c
+++ b/lib/rawstr.c
@@ -94,7 +94,7 @@ char Curl_raw_toupper(char in)
 /*
  * Curl_raw_equal() is for doing "raw" case insensitive strings. This is meant
  * to be locale independent and only compare strings we know are safe for
- * this.  See http://daniel.haxx.se/blog/2008/10/15/strcasecmp-in-turkish/ for
+ * this.  See https://daniel.haxx.se/blog/2008/10/15/strcasecmp-in-turkish/ for
  * some further explanation to why this function is necessary.
  *
  * The function is capable of comparing a-z case insensitively even for
diff --git a/m4/curl-compilers.m4 b/m4/curl-compilers.m4
index 27ed9dd479..085c6ff645 100644
--- a/m4/curl-compilers.m4
+++ b/m4/curl-compilers.m4
@@ -66,7 +66,7 @@ AC_DEFUN([CURL_CHECK_COMPILER], [
 ***
 *** If you wish to help the cURL project to better support your compiler
 *** you can report this and the required info on the libcurl development
-*** mailing list: http://cool.haxx.se/mailman/listinfo/curl-library/
+*** mailing list: https://cool.haxx.se/mailman/listinfo/curl-library/
 ***
 _EOF
   fi
diff --git a/packages/vms/curl_gnv_build_steps.txt b/packages/vms/curl_gnv_build_steps.txt
index 6a87fef91e..83534c002a 100644
--- a/packages/vms/curl_gnv_build_steps.txt
+++ b/packages/vms/curl_gnv_build_steps.txt
@@ -36,7 +36,7 @@ time that this document was written.
 [gnv.common_src]curl_*_original_src.bck is the original source of the curl kit
 as provided by the curl project.  [gnv.vms_src]curl-*_vms_src.bck, if present,
 has the OpenVMS specific files that are used for building that are not yet in
-the curl source kits for that release distributed http://curl.haxx.se
+the curl source kits for that release distributed https://curl.haxx.se
 
 These backup savesets should be restored to different directory trees on
 an ODS-5 volume(s) which are referenced by concealed rooted logical names.