diff --git a/SOURCES/0004-Backport-b0d3dbe3.patch b/SOURCES/0004-Backport-b0d3dbe3.patch
new file mode 100644
index 0000000..503376a
--- /dev/null
+++ b/SOURCES/0004-Backport-b0d3dbe3.patch
@@ -0,0 +1,50 @@
+From 24df755f0dc1555fdeaaa416c96a73719eb8a63c Mon Sep 17 00:00:00 2001
+From: Daniil Anfimov <anfimovdan@gmail.com>
+Date: Wed, 20 May 2026 21:13:50 +0200
+Subject: [PATCH] Backport b0d3dbe3: "abuild: do not export tmpdir/pkgbasedir"
+
+---
+ abuild-3.15.0/abuild.in | 13 ++++++++-----
+ 1 file changed, 8 insertions(+), 5 deletions(-)
+
+diff --git a/abuild.in b/abuild.in
+index c33a230..4447b4d 100644
+--- a/abuild.in
++++ b//abuild.in
+@@ -2563,7 +2563,13 @@ rootbld() {
+ 		"$BUILD_ROOT/tmp/tmp" "$BUILD_ROOT/usr/bin" \
+ 		"$REPODEST" "$BUILD_ROOT/$HOME/.ccache"
+
+-	cp /etc/abuild.conf "$BUILD_ROOT/etc"
++	# Avoid exporting {src,pkgbase,tmp}dir
++	cat - /etc/abuild.conf <<-EOF > "$BUILD_ROOT"/etc/abuild.conf
++		srcdir=/tmp/src
++		pkgbasedir=/tmp/pkg
++		tmpdir=/tmp/tmp
++
++	EOF
+
+ 	local dir
+ 	for dir in /usr/share/apk/keys/$CBUILD_ARCH /etc/apk/keys; do
+@@ -2653,9 +2659,6 @@ rootbld() {
+ 		--hostname "build-$buildhost-$CARCH" \
+ 		--chdir "$startdir" \
+ 		--clearenv \
+-		--setenv abuild_srcdir /tmp/src \
+-		--setenv pkgbasedir /tmp/pkg \
+-		--setenv tmpdir /tmp/tmp \
+ 		--setenv CARCH "$CARCH" \
+ 		--setenv HOME "$HOME" \
+ 		--setenv REPODEST "$REPODEST" \
+@@ -2976,7 +2979,7 @@ fi
+ APKBUILD=$(readlink -f "$APKBUILD")
+
+ startdir="${APKBUILD%/*}"
+-srcdir=${srcdir:-${abuild_srcdir:-"$startdir/src"}}
++srcdir=${srcdir:-"$startdir/src"}
+ pkgbasedir=${pkgbasedir:-"$startdir/pkg"}
+ tmpdir=${tmpdir:-"$startdir/tmp"}
+
+--
+2.54.0
+
diff --git a/SPECS/abuild.spec b/SPECS/abuild.spec
index 888b344..3f6d56f 100644
--- a/SPECS/abuild.spec
+++ b/SPECS/abuild.spec
@@ -12,6 +12,7 @@ Source2:        %{name}.tmpfiles
 Patch0:         0001-Do-not-build-docs.patch
 Patch1:         0002-Allow-running-abuild-rootbld.patch
 Patch2:         0003-Pass-startdir-as-a-bind-mount.patch
+Patch3:         0004-Backport-b0d3dbe3.patch
 
 BuildRequires:  zlib-devel
 BuildRequires:  make
@@ -56,6 +57,7 @@ abuild is a set of scripts used to build Alpine Linux packages.
 %patch0 -p1
 %patch1 -p1
 %patch2 -p1
+%patch3 -p1
 
 %build
 make VERSION=%{version}