diff --git a/srcpkgs/firebird/patches/007-libio.patch b/srcpkgs/firebird/patches/007-libio.patch
deleted file mode 100644
index af8bd0efc2b..00000000000
--- a/srcpkgs/firebird/patches/007-libio.patch
+++ /dev/null
@@ -1,14 +0,0 @@
---- src/jrd/perf.h	2018-01-05
-+++ src/jrd/perf.h	2018-08-20
-@@ -31,10 +31,6 @@
- #ifndef JRD_PERF_H
- #define JRD_PERF_H
- 
--#ifdef LINUX
--#include <libio.h>
--#endif
--
- #ifdef HAVE_TIMES
- #include <sys/types.h>
- #include <sys/times.h>
-
diff --git a/srcpkgs/firebird/template b/srcpkgs/firebird/template
index 3ff92fa51f0..acb2591d93b 100644
--- a/srcpkgs/firebird/template
+++ b/srcpkgs/firebird/template
@@ -1,7 +1,7 @@
 # Template file for 'firebird'
 pkgname=firebird
-version=2.5.8.27089
-revision=4
+version=2.5.9.27139
+revision=1
 _build=0
 _uver=${version//./_}
 wrksrc="${pkgname^}-${version}-${_build}"
@@ -15,11 +15,9 @@ maintainer="Jürgen Buchmüller <pullmoll@t-online.de>"
 license="custom"
 homepage="https://www.firebirdsql.org/en/start/"
 distfiles="https://github.com/FirebirdSQL/firebird/releases/download/R${_uver%_*}/Firebird-${version}-${_build}.tar.bz2"
-checksum=d87d774736edb1eacc242c68831edb3575c28cc61378491f42f8932bf9975678
+checksum=46ee37b14b44f3e45cd286b739f92e9366643f52bef51a131cc973a6980d9481
 disable_parallel_build=yes
 
-CXXFLAGS="-Wno-error=narrowing -fcheck-new -fno-delete-null-pointer-checks -fno-lifetime-dse"
-
 pre_configure() {
 	# Avoid errors telling we are not 'root' and
 	# do not change ownership to root:root and
@@ -31,15 +29,7 @@ pre_configure() {
 		-e 's;chmod 0444;chmod 0644;' \
 		-e 's;chmod 0555;chmod 0755;' \;
 	mv configure.{in,ac}
-	mkdir -p m4
-	echo "ACLOCAL_AMFLAGS = -I m4" > Makefile.am
 	autoreconf -if
-
-	# Set -fPIC for btyacc tool to support PIE linker flags
-	sed -i extern/btyacc/Makefile -e 's;CFLAGS=;CFLAGS=-fPIC;'
-
-	# Fix gcc6 error for "void * operator new(size_t size) { return 0; }"
-	patch -p0 < ${FILESDIR}/fix-gcc6-no_throw_bad_alloc.patch
 }
 
 do_install() {