diff --git a/soprano.spec b/soprano.spec
index ef9ac9f..7274af8 100644
--- a/soprano.spec
+++ b/soprano.spec
@@ -3,7 +3,7 @@
 
 Name:          soprano
 Version:       2.9.4
-Release:       2mamba
+Release:       3mamba
 Epoch:         1
 Summary:       The QT/C++ RDF framework
 Group:         Applications/Development
@@ -15,10 +15,12 @@ Source:        http://downloads.sourceforge.net/project/soprano/Soprano/%{versio
 License:       LGPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
+%ifnarch arm
+BuildRequires: java-openjdk11-headless
+%endif
 BuildRequires: ldconfig
 BuildRequires: libclucene-devel
 BuildRequires: libgcc
-BuildRequires: libgcj4-devel
 BuildRequires: libiodbc-devel
 BuildRequires: libqt4-devel
 BuildRequires: libraptor2-devel
@@ -27,11 +29,11 @@ BuildRequires: libstdc++6-devel
 ## AUTOBUILDREQ-END
 BuildRequires: cmake
 BuildRequires: libclucene-devel >= 2.3.3.4
-%if "%{stage1}" != "1"
-BuildRequires: gcc-java
-BuildRequires: java-gcj-compat
+#%if "%{stage1}" != "1"
+#BuildRequires: gcc-java
+#BuildRequires: java-gcj-compat
 BuildRequires: jpackage-utils
-%endif
+#%endif
 BuildRequires: libraptor2-devel
 Requires:      %{libname} = %{?epoch:%epoch:}%{version}-%{release}
 Requires:      sopranobackend
@@ -57,7 +59,9 @@ Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
 Obsoletes:     soprano-devel
 Provides:      soprano-devel = %{?epoch:%epoch:}%{version}-%{release}
 Requires:      %{name}-backend-redland = %{?epoch:%epoch:}%{version}-%{release}
+%ifnarch arm
 Requires:      %{name}-backend-sesame2 = %{?epoch:%epoch:}%{version}-%{release}
+%endif
 Requires:      %{name}-backend-virtuoso = %{?epoch:%epoch:}%{version}-%{release}
 
 %description -n %{libname}-devel
@@ -91,7 +95,9 @@ Summary:       Virtuoso backend for %{name}
 Provides:      %{name}-backend = %{?epoch:%epoch:}%{version}-%{release}
 Provides:      sopranobackend
 Requires:      %{libname} = %{?epoch:%epoch:}%{version}-%{release}
+%ifnarch aarch64
 Requires:      virtuoso-opensource
+%endif
 
 %description backend-virtuoso
 This package provides the Virtuoso storage backend for %{name}.
@@ -113,7 +119,7 @@ This package includes the Soprano API documentation in HTML format for easy brow
 
 %build
 JAVA_HOME=%{_jvmdir}/jdk
-JAVA_JWM_LIBRARY=%{_jnidir}
+#JAVA_JWM_LIBRARY=%{_jnidir}
 QTDIR=%{_qt4_prefix}; export QTDIR
 PATH="%{_qt4_bindir}:%{_kdebindir}:/bin:/usr/bin"; export PATH
 %cmake -d build \
@@ -172,6 +178,7 @@ PATH="%{_qt4_bindir}:%{_kdebindir}:/bin:/usr/bin"; export PATH
 %{_libdir}/soprano/libsoprano_redlandbackend.so
 %{_datadir}/soprano/plugins/redlandbackend.desktop
 
+%ifnarch arm
 %if "%{stage1}" != "1"
 %files backend-sesame2
 %defattr(-,root,root,-)
@@ -180,6 +187,7 @@ PATH="%{_qt4_bindir}:%{_kdebindir}:/bin:/usr/bin"; export PATH
 %{_datadir}/soprano/sesame2/*.class
 %{_datadir}/soprano/sesame2/*.jar
 %endif
+%endif
 
 %files backend-virtuoso
 %defattr(-,root,root,-)
@@ -193,6 +201,9 @@ PATH="%{_qt4_bindir}:%{_kdebindir}:/bin:/usr/bin"; export PATH
 %endif
 
 %changelog
+* Tue Jan 19 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 2.9.4-3mamba
+- rebuilt with java-openjdk
+
 * Tue Sep 22 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 2.9.4-2mamba
 - rebuilt with libraptor2