diff --git a/Modules/md5module.c b/Modules/md5module.c
index 1c401e88438..b2e65a0a5ff 100644
--- a/Modules/md5module.c
+++ b/Modules/md5module.c
@@ -74,7 +74,7 @@ typedef struct {
  * The library is free for all purposes without any express
  * guarantee it works.
  *
- * Tom St Denis, tomstdenis@gmail.com, http://libtom.org
+ * Tom St Denis, tomstdenis@gmail.com, https://www.libtom.net
  */
 
 /* rotate the hard way (platform optimizations could be done) */
diff --git a/Modules/sha1module.c b/Modules/sha1module.c
index 5209857041d..7126db93b1a 100644
--- a/Modules/sha1module.c
+++ b/Modules/sha1module.c
@@ -74,7 +74,7 @@ typedef struct {
  * The library is free for all purposes without any express
  * guarantee it works.
  *
- * Tom St Denis, tomstdenis@gmail.com, http://libtom.org
+ * Tom St Denis, tomstdenis@gmail.com, https://www.libtom.net
  */
 
 /* rotate the hard way (platform optimizations could be done) */
diff --git a/Modules/sha256module.c b/Modules/sha256module.c
index 6b8bd8f1d27..b90e5df7826 100644
--- a/Modules/sha256module.c
+++ b/Modules/sha256module.c
@@ -106,7 +106,7 @@ static void SHAcopy(SHAobject *src, SHAobject *dest)
  * The library is free for all purposes without any express
  * guarantee it works.
  *
- * Tom St Denis, tomstdenis@iahu.ca, http://libtom.org
+ * Tom St Denis, tomstdenis@iahu.ca, https://www.libtom.net
  */
 
 
diff --git a/Modules/sha512module.c b/Modules/sha512module.c
index 3fd9fa4c8d1..062343e71ff 100644
--- a/Modules/sha512module.c
+++ b/Modules/sha512module.c
@@ -94,7 +94,7 @@ static void SHAcopy(SHAobject *src, SHAobject *dest)
  * The library is free for all purposes without any express
  * guarantee it works.
  *
- * Tom St Denis, tomstdenis@iahu.ca, http://libtom.org
+ * Tom St Denis, tomstdenis@iahu.ca, https://www.libtom.net
  */