diff --git a/CHANGELOG.md b/CHANGELOG.md
index bbd158c..bc7ad8b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,8 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 ---
 
 ## [Unreleased]
+### Changed
+- Replace workflow diagram with PlantUML version
 
 ---
 
diff --git a/README.md b/README.md
index e124249..999151c 100644
--- a/README.md
+++ b/README.md
@@ -42,7 +42,7 @@ python submit_nextflow_pipeline.py \
 
 ## Flow Diagram
 
-![call-gSNP flow diagram](call-gSNP-DSL2.png)
+![call-gSNP flow diagram](docs/call-gsnp-flow.svg)
 
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diff --git a/call-gSNP-DSL2.png b/call-gSNP-DSL2.png
deleted file mode 100644
index 0c2ee4f..0000000
Binary files a/call-gSNP-DSL2.png and /dev/null differ