diff --git a/include/nlohmann/json.hpp b/include/nlohmann/json.hpp
index fcb3a9379..138ab78e7 100644
--- a/include/nlohmann/json.hpp
+++ b/include/nlohmann/json.hpp
@@ -281,8 +281,10 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
                     std::to_string(__GNUC_PATCHLEVEL__))
             }
         };
-#elif defined(__HP_cc) || defined(__HP_aCC)
-        result["compiler"] = "hp"
+#elif defined(__HP_aCC)
+        result["compiler"] = {{"family", "hp"}, {"version", __HP_aCC}};
+#elif defined(__HP_cc)
+        result["compiler"] = {{"family", "hp"}, {"version", __HP_cc}};
 #elif defined(__IBMCPP__)
         result["compiler"] = {{"family", "ilecpp"}, {"version", __IBMCPP__}};
 #elif defined(_MSC_VER)
diff --git a/single_include/nlohmann/json.hpp b/single_include/nlohmann/json.hpp
index cc7d6107f..51b06c874 100644
--- a/single_include/nlohmann/json.hpp
+++ b/single_include/nlohmann/json.hpp
@@ -19292,8 +19292,10 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
                     std::to_string(__GNUC_PATCHLEVEL__))
             }
         };
-#elif defined(__HP_cc) || defined(__HP_aCC)
-        result["compiler"] = "hp"
+#elif defined(__HP_aCC)
+        result["compiler"] = {{"family", "hp"}, {"version", __HP_aCC}};
+#elif defined(__HP_cc)
+        result["compiler"] = {{"family", "hp"}, {"version", __HP_cc}};
 #elif defined(__IBMCPP__)
         result["compiler"] = {{"family", "ilecpp"}, {"version", __IBMCPP__}};
 #elif defined(_MSC_VER)