1 files changed, 2 insertions, 0 deletions
diff --git a/pkgs/development/coq-modules/iris/default.nix b/pkgs/development/coq-modules/iris/default.nix
index 30d3cb8e51da6..ae6798243b6ac 100644
--- a/pkgs/development/coq-modules/iris/default.nix
+++ b/pkgs/development/coq-modules/iris/default.nix
@@ -6,12 +6,14 @@ mkCoqDerivation rec {
   owner = "iris";
   inherit version;
   defaultVersion = with lib.versions; lib.switch coq.coq-version [
+    { case = range "8.18" "8.19"; out = "4.2.0"; }
     { case = range "8.16" "8.18"; out = "4.1.0"; }
     { case = range "8.13" "8.17"; out = "4.0.0"; }
     { case = range "8.12" "8.14"; out = "3.5.0"; }
     { case = range "8.11" "8.13"; out = "3.4.0"; }
     { case = range "8.9"  "8.10"; out = "3.3.0"; }
   ] null;
+  release."4.2.0".sha256 = "sha256-HuiHIe+5letgr1NN1biZZFq0qlWUbFmoVI7Q91+UIfM=";
   release."4.1.0".sha256 = "sha256-nTZUeZOXiH7HsfGbMKDE7vGrNVCkbMaWxdMWUcTUNlo=";
   release."4.0.0".sha256 = "sha256-Jc9TmgGvkiDaz9IOoExyeryU1E+Q37GN24NIM397/Gg=";
   release."3.6.0".sha256 = "sha256:02vbq597fjxd5znzxdb54wfp36412wz2d4yash4q8yddgl1kakmj";