diff --git a/pkgs/applications/networking/instant-messengers/skypeforlinux/default.nix b/pkgs/applications/networking/instant-messengers/skypeforlinux/default.nix
index b7aa2d845b17..47a79c7309df 100644
--- a/pkgs/applications/networking/instant-messengers/skypeforlinux/default.nix
+++ b/pkgs/applications/networking/instant-messengers/skypeforlinux/default.nix
@@ -7,7 +7,7 @@ let
 
   # Please keep the version x.y.0.z and do not update to x.y.76.z because the
   # source of the latter disappears much faster.
-  version = "8.65.0.78";
+  version = "8.66.0.74";
 
   rpath = stdenv.lib.makeLibraryPath [
     alsaLib
@@ -65,7 +65,7 @@ let
           "https://mirror.cs.uchicago.edu/skype/pool/main/s/skypeforlinux/skypeforlinux_${version}_amd64.deb"
           "https://web.archive.org/web/https://repo.skype.com/deb/pool/main/s/skypeforlinux/skypeforlinux_${version}_amd64.deb"
         ];
-        sha256 = "04qcpz3w2clpa23axh0xx68rm792d2l029r3wy1hfzbxd51z09lh";
+        sha256 = "11bpzr3j6fa5x62xrx2q2sr1wxjrn0a37053j4prxjcvdrc5in8f";
       }
     else
       throw "Skype for linux is not supported on ${stdenv.hostPlatform.system}";