diff --git a/lib/modules/manager/asdf/index.ts b/lib/modules/manager/asdf/index.ts
index df7dcc8c60bebfffc25a8f0b5a32a8a98a3d0725..f2bdd86f38a1b5e1ac1bb0cda07b8e190b7691d5 100644
--- a/lib/modules/manager/asdf/index.ts
+++ b/lib/modules/manager/asdf/index.ts
@@ -5,7 +5,7 @@ export { extractPackageFile } from './extract';
 export const displayName = 'asdf';
 
 export const defaultConfig = {
-  fileMatch: ['(^|/)\\.tools-versions$'],
+  fileMatch: ['(^|/)\\.tool-versions$'],
 };
 
 export const supportedDatasources = [GithubTagsDatasource.id];
diff --git a/lib/modules/manager/asdf/readme.md b/lib/modules/manager/asdf/readme.md
index f593fcf5ee0532b6f408d2ea1f5053461cac61dc..23dcb02114c6b4c8e4b9d79161449abae5d1a098 100644
--- a/lib/modules/manager/asdf/readme.md
+++ b/lib/modules/manager/asdf/readme.md
@@ -1,5 +1,5 @@
 Keeps the [asdf](https://asdf-vm.com/manage/configuration.html#tool-versions)
-`.tools-versions` file updated.
+`.tool-versions` file updated.
 
 Because `asdf` supports the version management of many different tools, specific tool support needs to be added one by one.
 
@@ -7,4 +7,4 @@ Only the following tools are currently supported
 
 - [nodejs](https://github.com/asdf-vm/asdf-nodejs)
 
-NOTE: Because `.tools-versions` can support fallback versions only the first version entry for each supported tool is managed
+NOTE: Because `.tool-versions` can support fallback versions only the first version entry for each supported tool is managed