diff --git a/org.dadacoalition.yedit.test/.classpath b/org.dadacoalition.yedit.test/.classpath
index 4929c4c..a05f4e8 100644
--- a/org.dadacoalition.yedit.test/.classpath
+++ b/org.dadacoalition.yedit.test/.classpath
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.6"/>
 	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.7"/>
 	<classpathentry kind="src" path="src"/>
 	<classpathentry kind="lib" path="Resources/snakeyaml-1.13.jar" sourcepath="Resources/snakeyaml-1.13-sources.jar"/>
 	<classpathentry kind="output" path="bin"/>
diff --git a/org.dadacoalition.yedit.test/.settings/org.eclipse.jdt.core.prefs b/org.dadacoalition.yedit.test/.settings/org.eclipse.jdt.core.prefs
index 416f4fb..7341ab1 100644
--- a/org.dadacoalition.yedit.test/.settings/org.eclipse.jdt.core.prefs
+++ b/org.dadacoalition.yedit.test/.settings/org.eclipse.jdt.core.prefs
@@ -1,11 +1,11 @@
 eclipse.preferences.version=1
 org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
-org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.5
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.7
 org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
-org.eclipse.jdt.core.compiler.compliance=1.5
+org.eclipse.jdt.core.compiler.compliance=1.7
 org.eclipse.jdt.core.compiler.debug.lineNumber=generate
 org.eclipse.jdt.core.compiler.debug.localVariable=generate
 org.eclipse.jdt.core.compiler.debug.sourceFile=generate
 org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
 org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
-org.eclipse.jdt.core.compiler.source=1.5
+org.eclipse.jdt.core.compiler.source=1.7
diff --git a/org.dadacoalition.yedit.test/META-INF/MANIFEST.MF b/org.dadacoalition.yedit.test/META-INF/MANIFEST.MF
index dd59d5a..2955c4c 100644
--- a/org.dadacoalition.yedit.test/META-INF/MANIFEST.MF
+++ b/org.dadacoalition.yedit.test/META-INF/MANIFEST.MF
@@ -11,6 +11,6 @@ Require-Bundle: org.eclipse.ui,
  org.junit;bundle-version="4.11.0",
  org.apache.commons.io;bundle-version="2.0.1"
 Bundle-ActivationPolicy: lazy
-Bundle-RequiredExecutionEnvironment: J2SE-1.5
+Bundle-RequiredExecutionEnvironment: JavaSE-1.7
 Bundle-ClassPath: Resources/snakeyaml-1.13.jar,
  .
diff --git a/org.dadacoalition.yedit.test/build.properties b/org.dadacoalition.yedit.test/build.properties
index e11f49e..77a73e2 100644
--- a/org.dadacoalition.yedit.test/build.properties
+++ b/org.dadacoalition.yedit.test/build.properties
@@ -3,4 +3,4 @@ output.. = bin/
 bin.includes = META-INF/,\
                .,\
                bin/,\
-               Resources/snakeyaml-1.8.jar
+               Resources/snakeyaml-1.13.jar
diff --git a/org.dadacoalition.yedit/.classpath b/org.dadacoalition.yedit/.classpath
index a59730e..a05f4e8 100644
--- a/org.dadacoalition.yedit/.classpath
+++ b/org.dadacoalition.yedit/.classpath
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/J2SE-1.5"/>
 	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.7"/>
 	<classpathentry kind="src" path="src"/>
 	<classpathentry kind="lib" path="Resources/snakeyaml-1.13.jar" sourcepath="Resources/snakeyaml-1.13-sources.jar"/>
 	<classpathentry kind="output" path="bin"/>
diff --git a/org.dadacoalition.yedit/.settings/org.eclipse.jdt.core.prefs b/org.dadacoalition.yedit/.settings/org.eclipse.jdt.core.prefs
new file mode 100644
index 0000000..f42de36
--- /dev/null
+++ b/org.dadacoalition.yedit/.settings/org.eclipse.jdt.core.prefs
@@ -0,0 +1,7 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.7
+org.eclipse.jdt.core.compiler.compliance=1.7
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.source=1.7
diff --git a/org.dadacoalition.yedit/META-INF/MANIFEST.MF b/org.dadacoalition.yedit/META-INF/MANIFEST.MF
index 7c05f03..8b4aa89 100644
--- a/org.dadacoalition.yedit/META-INF/MANIFEST.MF
+++ b/org.dadacoalition.yedit/META-INF/MANIFEST.MF
@@ -13,7 +13,7 @@ Require-Bundle: org.eclipse.ui,
  org.eclipse.ui.ide,
  org.eclipse.ui.workbench.texteditor
 Bundle-ActivationPolicy: lazy
-Bundle-RequiredExecutionEnvironment: J2SE-1.5
+Bundle-RequiredExecutionEnvironment: JavaSE-1.7
 Export-Package: org.dadacoalition.yedit;uses:="org.eclipse.ui.plugin,org.osgi.framework",
  org.dadacoalition.yedit.editor;
   uses:="org.eclipse.jface.text,
diff --git a/org.dadacoalition.yedit/build.properties b/org.dadacoalition.yedit/build.properties
index 38bb658..68cda89 100644
--- a/org.dadacoalition.yedit/build.properties
+++ b/org.dadacoalition.yedit/build.properties
@@ -15,7 +15,6 @@ bin.excludes = icons/document.png,\
                icons/outline_mapping.png,\
                icons/outline_mapping2.gif,\
                icons/outline_mappingscalar2.gif,\
-               icons/outline_sequence2.gif,\
-               Resources/snakeyaml-1.8-sources.jar
+               icons/outline_sequence2.gif
 jars.compile.order = .
 src.includes = schema/