diff --git a/pkgs/applications/science/logic/cadical/default.nix b/pkgs/applications/science/logic/cadical/default.nix
index f0cb1efb3050..c6b1f6652451 100644
--- a/pkgs/applications/science/logic/cadical/default.nix
+++ b/pkgs/applications/science/logic/cadical/default.nix
@@ -30,6 +30,7 @@ stdenv.mkDerivation rec {
     install -Dm0755 build/cadical "$out/bin/cadical"
     install -Dm0755 build/mobical "$out/bin/mobical"
     install -Dm0644 src/ccadical.h "$dev/include/ccadical.h"
+    install -Dm0644 src/cadical.hpp "$dev/include/cadical.hpp"
     install -Dm0644 build/libcadical.a "$lib/lib/libcadical.a"
     mkdir -p "$out/share/doc/${pname}/"
     install -Dm0755 {LICEN?E,README*,VERSION} "$out/share/doc/${pname}/"