diff --git a/README.md b/README.md
index aadf863..6a934a0 100644
--- a/README.md
+++ b/README.md
@@ -33,8 +33,8 @@ crate.
 
 All crates licensed under either of
 
- * [Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0)
- * [MIT license](http://opensource.org/licenses/MIT)
+ * [Apache License, Version 2.0](https://www.apache.org/licenses/LICENSE-2.0)
+ * [MIT license](https://opensource.org/licenses/MIT)
 
 at your option.
 
diff --git a/dsa/README.md b/dsa/README.md
index 5c1e643..211b530 100644
--- a/dsa/README.md
+++ b/dsa/README.md
@@ -39,8 +39,8 @@ version bump.
 
 All crates licensed under either of
 
- * [Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0)
- * [MIT license](http://opensource.org/licenses/MIT)
+ * [Apache License, Version 2.0](https://www.apache.org/licenses/LICENSE-2.0)
+ * [MIT license](https://opensource.org/licenses/MIT)
 
 at your option.
 
diff --git a/ecdsa/README.md b/ecdsa/README.md
index 6beb1bb..edfffc1 100644
--- a/ecdsa/README.md
+++ b/ecdsa/README.md
@@ -43,8 +43,8 @@ USE AT YOUR OWN RISK!
 
 All crates licensed under either of
 
-- [Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0)
-- [MIT license](http://opensource.org/licenses/MIT)
+- [Apache License, Version 2.0](https://www.apache.org/licenses/LICENSE-2.0)
+- [MIT license](https://opensource.org/licenses/MIT)
 
 at your option.
 
diff --git a/ed25519/README.md b/ed25519/README.md
index b43a500..33a5f57 100644
--- a/ed25519/README.md
+++ b/ed25519/README.md
@@ -35,8 +35,8 @@ Ed25519 implementations, including HSMs or Cloud KMS services.
 
 All crates licensed under either of
 
- * [Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0)
- * [MIT license](http://opensource.org/licenses/MIT)
+ * [Apache License, Version 2.0](https://www.apache.org/licenses/LICENSE-2.0)
+ * [MIT license](https://opensource.org/licenses/MIT)
 
 at your option.
 
diff --git a/ed448/README.md b/ed448/README.md
index 2447cb1..8c2eb4b 100644
--- a/ed448/README.md
+++ b/ed448/README.md
@@ -35,8 +35,8 @@ Ed448 implementations, including HSMs or Cloud KMS services.
 
 All crates licensed under either of
 
- * [Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0)
- * [MIT license](http://opensource.org/licenses/MIT)
+ * [Apache License, Version 2.0](https://www.apache.org/licenses/LICENSE-2.0)
+ * [MIT license](https://opensource.org/licenses/MIT)
 
 at your option.
 
diff --git a/lms/README.md b/lms/README.md
index 1fcfce2..e06e346 100644
--- a/lms/README.md
+++ b/lms/README.md
@@ -64,8 +64,8 @@ good**.
 
 All crates licensed under either of
 
-* [Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0)
-* [MIT license](http://opensource.org/licenses/MIT)
+* [Apache License, Version 2.0](https://www.apache.org/licenses/LICENSE-2.0)
+* [MIT license](https://opensource.org/licenses/MIT)
 
 at your option.
 
diff --git a/ml-dsa/README.md b/ml-dsa/README.md
index c72e8ad..97952e9 100644
--- a/ml-dsa/README.md
+++ b/ml-dsa/README.md
@@ -24,8 +24,8 @@ USE AT YOUR OWN RISK!
 
 All crates licensed under either of
 
-* [Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0)
-* [MIT license](http://opensource.org/licenses/MIT)
+* [Apache License, Version 2.0](https://www.apache.org/licenses/LICENSE-2.0)
+* [MIT license](https://opensource.org/licenses/MIT)
 
 at your option.
 
diff --git a/rfc6979/README.md b/rfc6979/README.md
index 3803126..04c9fc7 100644
--- a/rfc6979/README.md
+++ b/rfc6979/README.md
@@ -26,8 +26,8 @@ version bump.
 
 All crates licensed under either of
 
- * [Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0)
- * [MIT license](http://opensource.org/licenses/MIT)
+ * [Apache License, Version 2.0](https://www.apache.org/licenses/LICENSE-2.0)
+ * [MIT license](https://opensource.org/licenses/MIT)
 
 at your option.
 
diff --git a/slh-dsa/README.md b/slh-dsa/README.md
index 78c138d..d0e44e1 100644
--- a/slh-dsa/README.md
+++ b/slh-dsa/README.md
@@ -21,8 +21,8 @@ USE AT YOUR OWN RISK!
 
 All crates licensed under either of
 
-* [Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0)
-* [MIT license](http://opensource.org/licenses/MIT)
+* [Apache License, Version 2.0](https://www.apache.org/licenses/LICENSE-2.0)
+* [MIT license](https://opensource.org/licenses/MIT)
 
 at your option.