diff --git a/pkgs/development/libraries/fltk/default.nix b/pkgs/development/libraries/fltk/default.nix
index 831a96f71f3e..61d73b83e497 100644
--- a/pkgs/development/libraries/fltk/default.nix
+++ b/pkgs/development/libraries/fltk/default.nix
@@ -1,5 +1,5 @@
 import ./common.nix rec {
-  version = "1.3.6";
+  version = "1.3.8";
   rev = "release-${version}";
-  sha256 = "0vzk4d6j927v7dxywr5xlqlf70myal1xikkdfvd11p94rcdf9bsv";
+  sha256 = "1pw4ndwn9rr1cxw5qiw32r9la2z9zbjphgsqq1hj2yy4blwv419r";
 }