diff --git a/pkgs/development/coq-modules/itauto/default.nix b/pkgs/development/coq-modules/itauto/default.nix
index af535993362..4993a76b4f0 100644
--- a/pkgs/development/coq-modules/itauto/default.nix
+++ b/pkgs/development/coq-modules/itauto/default.nix
@@ -6,9 +6,13 @@ mkCoqDerivation rec {
   owner = "fbesson";
   domain = "gitlab.inria.fr";
 
+  release."8.15.0".sha256 = "sha256:10qpv4nx1p0wm9sas47yzsg9z22dhvizszfa21yff08a8fr0igya";
+  release."8.14.0".sha256 = "sha256:1k6pqhv4dwpkwg81f2rlfg40wh070ks1gy9r0ravm2zhsbxqcfc9";
   release."8.13+no".sha256 = "sha256-gXoxtLcHPoyjJkt7WqvzfCMCQlh6kL2KtCGe3N6RC/A=";
   inherit version;
   defaultVersion = with versions; switch coq.coq-version [
+    { case = isEq "8.15"; out = "8.15.0"; }
+    { case = isEq "8.14"; out = "8.14.0"; }
     { case = isEq "8.13"; out = "8.13+no"; }
   ] null;