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-rw-r--r--gnu/packages/games.scm2
1 files changed, 1 insertions, 1 deletions
diff --git a/gnu/packages/games.scm b/gnu/packages/games.scm
index 9329e34c32..82a9660b2a 100644
--- a/gnu/packages/games.scm
+++ b/gnu/packages/games.scm
@@ -4196,7 +4196,7 @@ are only two levels to play with, but they are very addictive.")
     (version "15.6")
     (source (origin
               (method url-fetch)
-              (uri (string-append "http://downloads.sourceforge.net/pio/"
+              (uri (string-append "https://downloads.sourceforge.net/pio/"
                                   "pioneers-" version ".tar.gz"))
               (sha256
                (base32