diff --git a/lib/manager/cake/__fixtures__/build.cake b/lib/manager/cake/__fixtures__/build.cake
index 4cdbf4d0496313..f3d942b91997e7 100644
--- a/lib/manager/cake/__fixtures__/build.cake
+++ b/lib/manager/cake/__fixtures__/build.cake
@@ -1,5 +1,6 @@
 foo
 #addin nuget:?package=Foo.Foo&version=1.1.1
+#addin "nuget:?package=Bim.Bim&version=6.6.6"
 #tool nuget:https://example.com?package=Bar.Bar&version=2.2.2
 #module nuget:file:///tmp/?package=Baz.Baz&version=3.3.3
 // #module nuget:?package=Qux.Qux&version=4.4.4
diff --git a/lib/manager/cake/__snapshots__/index.spec.ts.snap b/lib/manager/cake/__snapshots__/index.spec.ts.snap
index a6e389b1fc832f..8df0548df51e2a 100644
--- a/lib/manager/cake/__snapshots__/index.spec.ts.snap
+++ b/lib/manager/cake/__snapshots__/index.spec.ts.snap
@@ -8,6 +8,11 @@ Object {
       "datasource": "nuget",
       "depName": "Foo.Foo",
     },
+    Object {
+      "currentValue": "6.6.6",
+      "datasource": "nuget",
+      "depName": "Bim.Bim",
+    },
     Object {
       "currentValue": "2.2.2",
       "datasource": "nuget",
diff --git a/lib/manager/cake/index.ts b/lib/manager/cake/index.ts
index 60cb08b985172d..74415c75d33449 100644
--- a/lib/manager/cake/index.ts
+++ b/lib/manager/cake/index.ts
@@ -17,6 +17,10 @@ const lexerStates = {
     dependency: {
       match: /^#(?:addin|tool|module)\s+(?:nuget|dotnet):.*$/,
     },
+    dependencyQuoted: {
+      match: /^#(?:addin|tool|module)\s+"(?:nuget|dotnet):[^"]+"\s*$/,
+      value: (s: string) => s.trim().slice(1, -1),
+    },
     unknown: { match: /[^]/, lineBreaks: true },
   },
 };
@@ -26,6 +30,7 @@ function parseDependencyLine(line: string): PackageDependency | null {
     let url = line.replace(/^[^:]*:/, '');
     const isEmptyHost = url.startsWith('?');
     url = isEmptyHost ? `http://localhost/${url}` : url;
+
     const { origin: registryUrl, protocol, searchParams } = new URL(url);
 
     const depName = searchParams.get('package');
@@ -54,7 +59,7 @@ export function extractPackageFile(content: string): PackageFile {
   let token = lexer.next();
   while (token) {
     const { type, value } = token;
-    if (type === 'dependency') {
+    if (type === 'dependency' || type === 'dependencyQuoted') {
       const dep = parseDependencyLine(value);
       if (dep) {
         deps.push(dep);