diff --git a/README b/README
index 366642c..b706491 100644
--- a/README
+++ b/README
@@ -46,6 +46,8 @@ In order to get the sigrok-test source code and build it, run:
  $ cd sigrok-test
  $ PKG_CONFIG_PATH=$HOME/sr/lib/pkgconfig ./configure \
 	--with-decodersdir=/path/to/decoders
+ $ ./autogen.sh
+ $ ./configure
  $ make
 
 This will test the decoders located at /path/to/decoders:
diff --git a/configure.ac b/configure.ac
index a01f0b5..fb13c67 100644
--- a/configure.ac
+++ b/configure.ac
@@ -55,7 +55,7 @@ SR_PKG_CHECK_SUMMARY([st_pkglibs_summary])
 
 # Python 3 is always needed.
 SR_PKG_CHECK([python3], [ST_PKGLIBS],
-	[python3 >= 3.2], [python-3.4 >= 3.4], [python-3.3 >= 3.3], [python-3.2 >= 3.2])
+	[python3 >= 3.2], [python-3.5 >= 3.5], [python-3.4 >= 3.4], [python-3.3 >= 3.3], [python-3.2 >= 3.2])
 AS_IF([test "x$sr_have_python3" = xno],
 	[AC_MSG_ERROR([Cannot find Python 3 development headers.])])