diff --git a/README.md b/README.md
index 503ceb2a23bc07eadcc262c6b68f5bde346d811c..a796504055d4cd782a3e23c5b9f408442db22ebf 100644
--- a/README.md
+++ b/README.md
@@ -35,14 +35,14 @@ Details for the next session:
 
 | Time  | Subject          |  Contents                 |
 | ----- | -----------------| ------------------------- |
-| 10:00 | [Introduction](https://git.lumc.nl/courses/gitcourse/wikis/files-most-recent/introduction.pdf)             | Welcome and version control introduction. |
-| 10:30 | [Git basics](https://git.lumc.nl/courses/gitcourse/wikis/files-most-recent/basics.pdf) | Basic Git command line flow |
-| 11:15 | [Practical](https://git.lumc.nl/courses/gitcourse/wikis/files-most-recent/basics_handouts.pdf)             |                                              |
+| 10:00 | [Introduction](https://git.lumc.nl/courses/gitcourse/-/wikis/files-most-recent/introduction.pdf)             | Welcome and version control introduction. |
+| 10:30 | [Git basics](https://git.lumc.nl/courses/gitcourse/-/wikis/files-most-recent/basics.pdf) | Basic Git command line flow |
+| 11:15 | [Practical](https://git.lumc.nl/courses/gitcourse/-/wikis/files-most-recent/basics_handouts.pdf)             |                                              |
 | 12:00 | Lunch                                                                 |     |              
-| 12:30 | [The git commit graph](https://git.lumc.nl/courses/gitcourse/wikis/files-most-recent/commit_graph.pdf)  | Commit graph, branching, merging, and resolving merge conflicts. |
-| 13:15 | [Practical](https://git.lumc.nl/courses/gitcourse/wikis/files-most-recent/commit_graph_handouts.pdf)|                                              | 
-| 14:00 | [Collaboration: remote repositories](https://git.lumc.nl/courses/gitcourse/wikis/files-most-recent/remotes.pdf)   | Sharing and collaborating via remotes. |
-| 14:45 | [Practical](https://git.lumc.nl/courses/gitcourse/wikis/files-most-recent/remotes_handouts.pdf)            |                   |                           
+| 12:30 | [The git commit graph](https://git.lumc.nl/courses/gitcourse/-/wikis/files-most-recent/commit_graph.pdf)  | Commit graph, branching, merging, and resolving merge conflicts. |
+| 13:15 | [Practical](https://git.lumc.nl/courses/gitcourse/-/wikis/files-most-recent/commit_graph_handouts.pdf)|                                              | 
+| 14:00 | [Collaboration: remote repositories](https://git.lumc.nl/courses/gitcourse/-/wikis/files-most-recent/remotes.pdf)   | Sharing and collaborating via remotes. |
+| 14:45 | [Practical](https://git.lumc.nl/courses/gitcourse/-/wikis/files-most-recent/remotes_handouts.pdf)            |                   |                           
 | 15:30 | Questions, closing                                                                     |                   |                           
 
 ## Further reading
@@ -60,10 +60,10 @@ Details for the next session:
 
 ## Past course dates
 
-- [September 12th, 2018](https://git.lumc.nl/courses/gitcourse/wikis/session-september-12th-2018)
-- [March 29th, 2018](https://git.lumc.nl/courses/gitcourse/wikis/session-march-29th-2018)
-- [November 22nd, 2017](https://git.lumc.nl/courses/gitcourse/wikis/session-november-22nd-2017)
-- [September 6th, 2017](https://git.lumc.nl/courses/gitcourse/wikis/session-september-6th-2017)
+- [September 12th, 2018](https://git.lumc.nl/courses/gitcourse/-/wikis/session-september-12th-2018)
+- [March 29th, 2018](https://git.lumc.nl/courses/gitcourse/-/wikis/session-march-29th-2018)
+- [November 22nd, 2017](https://git.lumc.nl/courses/gitcourse/-/wikis/session-november-22nd-2017)
+- [September 6th, 2017](https://git.lumc.nl/courses/gitcourse/-/wikis/session-september-6th-2017)
 - October 14th, 2013: Git introduction course
 - June 23rd, 2014: Git introduction course
 - December 1st, 2015: Code and data management with Git