diff --git a/package.json b/package.json
index 47c43a72..8caddf73 100644
--- a/package.json
+++ b/package.json
@@ -95,7 +95,7 @@
     "unplugin": "^1.12.2"
   },
   "devDependencies": {
-    "@danielx/civet": "0.8.11",
+    "@danielx/civet": "0.9.0",
     "@danielx/hera": "^0.8.16",
     "@prettier/sync": "^0.5.2",
     "@types/assert": "^1.5.6",
diff --git a/test/integration.civet b/test/integration.civet
index 8862a9e2..10a439f9 100644
--- a/test/integration.civet
+++ b/test/integration.civet
@@ -50,6 +50,4 @@ describe "integration", ->
     it `should sourcemap correctly, ${mode} mode`, ->
       {err, stderr} := await execCmdError `bash -c "(cd integration/example && ../../dist/civet --no-config error-${mode}.civet)"`
       assert.match err.message, /Command failed/
-      // The newline in this /// block is to avoid a bug in Civet <0.9:
-      assert.match stderr, ///error-
-      ${mode}.civet:6:7///
+      assert.match stderr, ///error-${mode}.civet:6:7///
diff --git a/yarn.lock b/yarn.lock
index b6af5d04..dcdbfbf4 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -150,10 +150,10 @@
   dependencies:
     "@jridgewell/trace-mapping" "0.3.9"
 
-"@danielx/civet@0.8.11":
-  version "0.8.11"
-  resolved "https://registry.yarnpkg.com/@danielx/civet/-/civet-0.8.11.tgz#82b172b909cdb6c4b1df006089affd876aeff3ce"
-  integrity sha512-jrIyenaKqaqSkcG/9L6sJXvz3LsYsdaUWUjCwbcDdnbqbBnM1kM0krFpw0eiWfw+uOdjH2Q0XOu28BJjyRuuTQ==
+"@danielx/civet@0.9.0":
+  version "0.9.0"
+  resolved "https://registry.yarnpkg.com/@danielx/civet/-/civet-0.9.0.tgz#ab78108c83ecd8fdfc804048fb9ce7341303e2d5"
+  integrity sha512-DjeJ2gAXPK2g2JlVPAspQkp1AWftofl6WgxDb10rYVJN3BTf7E4es4rHxP56lEengZMwAtxUFEbadjQIZhiiSg==
   dependencies:
     "@cspotcode/source-map-support" "^0.8.1"
     "@typescript/vfs" "^1.6.0"