diff --git a/beust-jcommander.changes b/beust-jcommander.changes
index 6118968..09280df 100644
--- a/beust-jcommander.changes
+++ b/beust-jcommander.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Thu Oct 25 20:55:17 UTC 2018 - Fridrich Strba <fstrba@suse.com>
+
+- Build with java source/target levels 8 since the code uses
+  String.join() which does not exist before java 8
+
 -------------------------------------------------------------------
 Wed Oct 24 06:47:17 UTC 2018 - Fridrich Strba <fstrba@suse.com>
 
diff --git a/beust-jcommander.spec b/beust-jcommander.spec
index 1cb1966..5940e31 100644
--- a/beust-jcommander.spec
+++ b/beust-jcommander.spec
@@ -32,10 +32,10 @@ Source1:        %{name}.pom
 Source2:        generate-tarball.sh
 Patch0:         0001-ParseValues-NullPointerException-patch.patch
 BuildRequires:  fdupes
-BuildRequires:  java-devel >= 1.7
+BuildRequires:  java-devel >= 1.8
 BuildRequires:  javapackages-local
 BuildRequires:  javapackages-tools
-Requires:       java >= 1.7
+Requires:       java >= 1.8
 Obsoletes:      %{short_name} < %{version}-%{release}
 Provides:       %{short_name} = %{version}-%{release}
 BuildArch:      noarch
@@ -62,8 +62,8 @@ sed -i 's/@VERSION@/%{version}/g' pom.xml
 %build
 mkdir -p build/classes
 mkdir -p build/javadoc
-javac -d build/classes -source 7 -target 7 `find src/main/java -name *.java | xargs`
-javadoc -d build/javadoc -source 7 --source-path src/main/java/ `find src/main/java -name *.java | xargs`
+javac -d build/classes -source 8 -target 8 `find src/main/java -name *.java | xargs`
+javadoc -d build/javadoc -source 8 --source-path src/main/java/ `find src/main/java -name *.java | xargs`
 (cd build/classes && jar cf ../%{name}-%{version}.jar `find . -name *.class | xargs`)
 
 %install