diff --git a/techtree-manager/src/render.rs b/techtree-manager/src/render.rs
index 9373d2d..4fcb184 100644
--- a/techtree-manager/src/render.rs
+++ b/techtree-manager/src/render.rs
@@ -2,6 +2,19 @@ use std::process::Command;
 
 use anyhow::Context as _;
 
+trait SuccessExt {
+    fn success(&mut self) -> anyhow::Result<()>;
+}
+
+impl SuccessExt for Command {
+    fn success(&mut self) -> anyhow::Result<()> {
+        if !self.status()?.success() {
+            anyhow::bail!("Command returned unsuccessfully");
+        }
+        Ok(())
+    }
+}
+
 pub async fn render_and_publish(
     tree: &crate::tree::Tree,
     timestamp: &str,
@@ -20,7 +33,7 @@ pub async fn render_and_publish(
         .arg("-C")
         .arg(&render_repo)
         .arg("init")
-        .status()
+        .success()
         .context("Failed to initialize render repository")?;
 
     let dot_file = render_repo.join("techtree.dot");
@@ -35,7 +48,7 @@ pub async fn render_and_publish(
         .arg("-o")
         .arg(&svg_file)
         .arg(&dot_file)
-        .status()
+        .success()
         .context("Failed to generate svg graph from dot source")?;
 
     Command::new("git")
@@ -44,7 +57,7 @@ pub async fn render_and_publish(
         .arg("add")
         .arg(dot_file.file_name().unwrap())
         .arg(svg_file.file_name().unwrap())
-        .status()
+        .success()
         .context("Failed to add generated graph files to git index")?;
 
     Command::new("git")
@@ -52,7 +65,7 @@ pub async fn render_and_publish(
         .arg(&render_repo)
         .arg("commit")
         .args(["-m", &format!("Updated techtree at {timestamp}")])
-        .status()
+        .success()
         .context("Failed to add generated graph files to git index")?;
 
     Command::new("git")