diff --git a/juliaup.changes b/juliaup.changes
index 39a9f92..ab37868 100644
--- a/juliaup.changes
+++ b/juliaup.changes
@@ -1,13 +1,9 @@
--------------------------------------------------------------------
-Thu Jul 21 06:19:39 UTC 2022 - Soc Virnyl Estela <socvirnyl.estela@gmail.com>
-
-- disabled alternatives. need to modify the actual julia
-  package and contact package maintainer
-
 -------------------------------------------------------------------
 Thu Jul 21 05:53:04 UTC 2022 - Soc Virnyl Estela <socvirnyl.estela@gmail.com>
 
 - use alternatives instead
+- provide versioned julia
+- conflicts other julia so use update-alternatives
 
 -------------------------------------------------------------------
 Tue Jul 19 15:31:47 UTC 2022 - socvirnyl.estela@gmail.com
diff --git a/juliaup.spec b/juliaup.spec
index 6691e67..1bce187 100644
--- a/juliaup.spec
+++ b/juliaup.spec
@@ -76,8 +76,9 @@ Source0:        %{name}-%{version}.tar.gz
 Source1:        vendor.tar.gz
 Source2:        cargo_config
 BuildRequires:  cargo-packaging
-Obsoletes:      julia < %{oldest_supported_julia_version}
+Conflicts:      julia
 %provides_julia_versioned julia
+PreReq:         update-alternatives
 
 %description
 A cross-platform installer for the Julia programming language.
@@ -97,7 +98,22 @@ cp %{SOURCE2} .cargo/config
 
 %install
 %{cargo_install}
-ln -sf %{_bindir}/julialauncher %{buildroot}%{_bindir}/julia
+mkdir -p %{buildroot}%{_sysconfdir}/alternatives
+ln -sf %{_sysconfdir}/alternatives/julia %{buildroot}%{_bindir}/julia
+
+%post
+"%_sbindir/update-alternatives" --install \
+  "%_bindir/julia" julia "%_bindir/julialauncher" 1
+
+%pre
+if [ "$1" -gt 0 ] && [ -f %{_sbindir/update-alternatives} ] ; then
+  "%_sbindir/update-alternatives" --remove julia "%_bindir/julialauncher";
+fi;
+
+%postun
+if [ ! -f %{_bindir}/julia ] ; then
+  "%{_sbindir}/update-alternatives" --remove julia "%{_bindir}/julialauncher"
+fi
 
 %files
 %license LICENSE
@@ -105,6 +121,6 @@ ln -sf %{_bindir}/julialauncher %{buildroot}%{_bindir}/julia
 %{_bindir}/juliainstaller
 %{_bindir}/julialauncher
 %{_bindir}/juliaup
-%{_bindir}/julia
+%ghost %_sysconfdir/alternatives/julia
 
 %changelog