diff --git a/README.md b/README.md
index 00f890717..32421c750 100644
--- a/README.md
+++ b/README.md
@@ -16,9 +16,9 @@ The package assumes that you have several additional tools installed. Their avai
 
 In particular, Stylesheets assume that you use `ant` version 1.9.x+. If for some reason, you need to use `ant` 1.8.x, you should remove all occurences of the attribute `@zip64Mode` from the file `common/teianttasks.xml`.
 
-It is helpful to have the TEI environment installed locally. Please refer to http://www.tei-c.org/Guidelines/P5/get.xml for hints on how to do that.
+It is helpful to have the TEI environment installed locally. Please refer to <https://tei-c.org/guidelines/p5/> for hints on how to do that.
 
-It is also possible to avoid manual installation of additional tools, by resorting to the pre-built test environment in Docker described in https://teic.github.io/Documentation/TCW/testing_and_building.html .
+It is also possible to avoid manual installation of additional tools, by resorting to the pre-built test environment in Docker described in <https://teic.github.io/Documentation/TCW/testing_and_building.html>.
 
 ## Usage
 The `bin/` directory contains several executable files, which can be run on Linux, OS X, or other Unix operating systems. These perform a variety of transformations and are very useful for, e.g., generating a schema from a TEI ODD. Some examples: