diff --git a/.ci/xtask/src/core/dependency.rs b/.ci/xtask/src/core/dependency.rs
index c8f28b99e..749864738 100644
--- a/.ci/xtask/src/core/dependency.rs
+++ b/.ci/xtask/src/core/dependency.rs
@@ -4,7 +4,7 @@ pub enum Crate {
     CargoSbom,
     Cross,
     Mdbook,
-    MdbookMermaid,
+    MdbookPlantuml,
     Trunk,
 }
 impl Crate {
@@ -14,7 +14,7 @@ impl Crate {
             Crate::CargoSbom => "cargo-sbom",
             Crate::Cross => "cross",
             Crate::Mdbook => "mdbook",
-            Crate::MdbookMermaid => "mdbook-mermaid",
+            Crate::MdbookPlantuml => "mdbook-plantuml",
             Crate::Trunk => "trunk",
         }.to_string()
     }
diff --git a/.ci/xtask/src/tasks/doc.rs b/.ci/xtask/src/tasks/doc.rs
index e8fef8de0..487b5e741 100644
--- a/.ci/xtask/src/tasks/doc.rs
+++ b/.ci/xtask/src/tasks/doc.rs
@@ -42,7 +42,7 @@ pub mod book {
     #[tracing::instrument]
     pub fn serve() -> crate::Result {
         util::install_crate(Crate::Mdbook)?;
-        util::install_crate(Crate::MdbookMermaid)?;
+        util::install_crate(Crate::MdbookPlantuml)?;
 
         Command::new("mdbook")
             .arg("serve")
diff --git a/Cargo.toml b/Cargo.toml
index 888f36ccd..445d038e2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -119,7 +119,7 @@ cargo-deny.version = "0.14.3"
 cargo-sbom.version = "0.8.4"
 cross.version = "0.2.5"
 mdbook.version = "0.4.36"
-mdbook-mermaid.version = "0.13.0"
+mdbook-plantuml.version = "0.8.0"
 trunk.version = "0.18.3"