diff --git a/pkgs/development/coq-modules/paco/default.nix b/pkgs/development/coq-modules/paco/default.nix
index cbc947092ab8..92a4aa229d92 100644
--- a/pkgs/development/coq-modules/paco/default.nix
+++ b/pkgs/development/coq-modules/paco/default.nix
@@ -5,11 +5,13 @@ mkCoqDerivation {
   owner = "snu-sf";
   inherit version;
   defaultVersion = with lib.versions; lib.switch coq.coq-version [
+    { case = range "8.13" "8.17"; out = "4.2.0"; }
     { case = range "8.12" "8.17"; out = "4.1.2"; }
     { case = range "8.9" "8.13"; out = "4.1.1"; }
     { case = range "8.6" "8.13"; out = "4.0.2"; }
     { case = isEq "8.5";         out = "1.2.8"; }
   ] null;
+  release."4.2.0".sha256 = "sha256-YHYtiz9hium96n3owL/C99AjJAFTlTCmmb2+ttevgMY=";
   release."4.1.2".sha256 = "sha256:1l8mwakqp4wnppsldl8wp2j24h1jvadnvrsgf35xnvdyygypjp2v";
   release."4.1.1".sha256 = "1qap8cyv649lr1s11r7h5jzdjd4hsna8kph15qy5fw24h5nx6byy";
   release."4.0.2".sha256 = "1q96bsxclqx84xn5vkid501jkwlc1p6fhb8szrlrp82zglj58b0b";
diff --git a/pkgs/top-level/coq-packages.nix b/pkgs/top-level/coq-packages.nix
index c36852804302..46f1ad0565d8 100644
--- a/pkgs/top-level/coq-packages.nix
+++ b/pkgs/top-level/coq-packages.nix
@@ -126,7 +126,10 @@ let
         (lib.versionAtLeast self.coq.version "8.14") {
           compcert = self.compcert.override { version = "3.11"; };
         }) // (lib.optionalAttrs (lib.versions.isEq self.coq.coq-version "8.13") {
-          ITree = self.ITree.override { version = "4.0.0"; };
+          ITree = self.ITree.override {
+            version = "4.0.0";
+            paco = self.paco.override { version = "4.1.2"; };
+          };
        }));
       zorns-lemma = callPackage ../development/coq-modules/zorns-lemma {};
       filterPackages = doesFilter: if doesFilter then filterCoqPackages self else self;