diff --git a/influxdb-cxx.changes b/influxdb-cxx.changes
index 391036b..e69b89a 100644
--- a/influxdb-cxx.changes
+++ b/influxdb-cxx.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Thu Sep 23 15:57:18 UTC 2021 - Jan Engelhardt <jengelh@inai.de>
+
+- Trim historic specfile constructs.
+
 -------------------------------------------------------------------
 Thu Sep  9 20:04:34 UTC 2021 - Matwey Kornilov <matwey.kornilov@gmail.com>
 
diff --git a/influxdb-cxx.spec b/influxdb-cxx.spec
index 526bb93..7be6bbd 100644
--- a/influxdb-cxx.spec
+++ b/influxdb-cxx.spec
@@ -36,33 +36,27 @@ BuildRequires:  gcc-c++
 BuildRequires:  libboost_system-devel >= 1.57
 BuildRequires:  cmake(trompeloeil)
 BuildRequires:  pkgconfig(libcurl)
-BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 
 %description
 InfluxDB C++ client library.
 
 %package -n lib%{soname}%{sover}
 Summary:        InfluxDB C++ client library
-Group:          Development/Languages/C and C++
+Group:          System/Libraries
 
 %description -n lib%{soname}%{sover}
 InfluxDB C++ client library.
 
 %package devel
-Summary:        InfluxDB C++ client library
+Summary:        Headers for the InfluxDB C++ client library
 Group:          Development/Languages/C and C++
 Requires:       lib%{soname}%{sover} = %{version}-%{release}
 
 %description devel
-InfluxDB C++ client library.
-
-This package contains development files.
+Headers for the InfluxDB C++ client library.
 
 %prep
-%setup -q
-%patch0 -p1
-%patch1 -p1
-%patch2 -p1
+%autosetup -p1
 
 %build
 %cmake -DINFLUXCXX_SYSTEMTEST:BOOL=OFF
@@ -79,12 +73,10 @@ This package contains development files.
 %postun -n lib%{soname}%{sover} -p /sbin/ldconfig
 
 %files -n lib%{soname}%{sover}
-%defattr(-,root,root)
 %license LICENSE
 %{_libdir}/lib%{soname}.so.%{sover}*
 
 %files devel
-%defattr(-,root,root)
 %license LICENSE
 %doc README.md CONTRIBUTING.md
 %{_includedir}/InfluxDB.h