diff --git a/pkgs/development/coq-modules/smpl/default.nix b/pkgs/development/coq-modules/smpl/default.nix
index 63bed38ead9c..f03065cf0450 100644
--- a/pkgs/development/coq-modules/smpl/default.nix
+++ b/pkgs/development/coq-modules/smpl/default.nix
@@ -8,10 +8,14 @@ mkCoqDerivation {
   release."8.10.2".sha256 = "sha256-TUfTZKBgrSOT6piXRViHSGPE9NSj3bGx2XBIw6YCcEs=";
   release."8.12".sha256 = "sha256-UQbDHLVBKYk++o+Y2B6ARYRYGglytsnXhguwMatjOHg=";
   release."8.13".sha256 = "sha256-HxQBaIE2CjyfG4GoIXprfehqjsr/Z74YdodxMmrbzSg=";
+  release."8.14".sha256 = "sha256:0wmrc741j67ch4rkygjkrz5i9afi01diyyj69i24cmasvx4wad38";
+  release."8.15".sha256 = "sha256:0m9xlkdhilvqb0v4q9c4hzfwffbccd6029ks39xg7qbiq6zklpvp";
   releaseRev = v: "v${v}";
 
   inherit version;
   defaultVersion = with versions; switch coq.version [
+    { case = isEq "8.15"; out = "8.15"; }
+    { case = isEq "8.14"; out = "8.14"; }
     { case = "8.13.2"; out = "8.13"; }
     { case = "8.12.2"; out = "8.12"; }
     { case = "8.10.2"; out = "8.10.2"; }