diff --git a/spec/src/main/asciidoc/ch05-java_representation.adoc b/spec/src/main/asciidoc/ch05-java_representation.adoc
index 76d08ee..2289e7e 100644
--- a/spec/src/main/asciidoc/ch05-java_representation.adoc
+++ b/spec/src/main/asciidoc/ch05-java_representation.adoc
@@ -873,7 +873,7 @@
 ----
 
 .JAXB 1.0: isA Relationship between generated element interface and its type
-image::images/xmlb-9.png[image]
+image::images/xmlb-9.svg[image]
 
 .Jakarta XML Binding: hasA Relationship between element instance and its type as described in <<Named Java Element instance>>
 image::images/xmlb-10.png[image]
diff --git a/spec/src/main/asciidoc/images/xmlb-9.png b/spec/src/main/asciidoc/images/xmlb-9.png
deleted file mode 100644
index d2eb8b3..0000000
--- a/spec/src/main/asciidoc/images/xmlb-9.png
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Binary files differ
diff --git a/spec/src/main/asciidoc/images/xmlb-9.svg b/spec/src/main/asciidoc/images/xmlb-9.svg
new file mode 100644
index 0000000..44018da
--- /dev/null
+++ b/spec/src/main/asciidoc/images/xmlb-9.svg
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