diff --git a/lib/config/index.spec.ts b/lib/config/index.spec.ts
index 3b73bbca77c7fe3be4b5d787ae860b7cce750834..41deb82830f776327dc98ac67946a6157e9b31f8 100644
--- a/lib/config/index.spec.ts
+++ b/lib/config/index.spec.ts
@@ -95,7 +95,7 @@ describe('config/index', () => {
       const configParser = await import('./index');
       const config = configParser.getManagerConfig(parentConfig, 'npm');
       expect(config).toContainEntries([
-        ['fileMatch', ['(^|/)package.json$']],
+        ['fileMatch', ['(^|/)package\\.json$']],
         ['rollbackPrs', true],
       ]);
       expect(
diff --git a/lib/modules/manager/cargo/index.ts b/lib/modules/manager/cargo/index.ts
index d5814360e259e71041249c1ca3957260ac0f76b8..c910bbb819c3881dc739f74c7cc3d7c486de2897 100644
--- a/lib/modules/manager/cargo/index.ts
+++ b/lib/modules/manager/cargo/index.ts
@@ -11,7 +11,7 @@ export { extractPackageFile, updateArtifacts };
 
 export const defaultConfig = {
   commitMessageTopic: 'Rust crate {{depName}}',
-  fileMatch: ['(^|/)Cargo.toml$'],
+  fileMatch: ['(^|/)Cargo\\.toml$'],
   versioning: cargoVersioning.id,
   rangeStrategy: 'bump',
 };
diff --git a/lib/modules/manager/circleci/index.ts b/lib/modules/manager/circleci/index.ts
index 7214cac5e7b6133f46fb52e771872a367130a319..8505e9d39ce635286d7bd8eb2cfa4f1e02be5d0d 100644
--- a/lib/modules/manager/circleci/index.ts
+++ b/lib/modules/manager/circleci/index.ts
@@ -8,7 +8,7 @@ export const displayName = 'CircleCI';
 export const url = 'https://circleci.com/docs/configuration-reference';
 
 export const defaultConfig = {
-  fileMatch: ['(^|/).circleci/config.yml$'],
+  fileMatch: ['(^|/)\\.circleci/config\\.yml$'],
 };
 
 export const supportedDatasources = [DockerDatasource.id, OrbDatasource.id];
diff --git a/lib/modules/manager/cloudbuild/index.ts b/lib/modules/manager/cloudbuild/index.ts
index b1c2d7f1c4314204da8af85f7d76dcae1060c97c..979535276ccc5d2579f10fcb407b94528b9dcfd1 100644
--- a/lib/modules/manager/cloudbuild/index.ts
+++ b/lib/modules/manager/cloudbuild/index.ts
@@ -4,7 +4,7 @@ import { extractPackageFile } from './extract';
 export { extractPackageFile };
 
 export const defaultConfig = {
-  fileMatch: ['(^|/)cloudbuild.ya?ml'],
+  fileMatch: ['(^|/)cloudbuild\\.ya?ml'],
 };
 
 export const supportedDatasources = [DockerDatasource.id];
diff --git a/lib/modules/manager/composer/index.ts b/lib/modules/manager/composer/index.ts
index be97967a838e4f8479d249362bd0f8fb8c922d08..90a5a327423fb6d9d51f02af74e45a5e4994bed9 100644
--- a/lib/modules/manager/composer/index.ts
+++ b/lib/modules/manager/composer/index.ts
@@ -18,7 +18,7 @@ export {
 };
 
 export const defaultConfig = {
-  fileMatch: ['(^|/)([\\w-]*)composer.json$'],
+  fileMatch: ['(^|/)([\\w-]*)composer\\.json$'],
   versioning: composerVersioningId,
 };
 
diff --git a/lib/modules/manager/droneci/index.ts b/lib/modules/manager/droneci/index.ts
index 8206a481a503650a37fbee9353391c52aed72fae..85f60b8c42710d40064b1e9251c08cbd35f37f9a 100644
--- a/lib/modules/manager/droneci/index.ts
+++ b/lib/modules/manager/droneci/index.ts
@@ -7,7 +7,7 @@ export const language = ProgrammingLanguage.Docker;
 export { extractPackageFile };
 
 export const defaultConfig = {
-  fileMatch: ['(^|/).drone.yml$'],
+  fileMatch: ['(^|/)\\.drone\\.yml$'],
 };
 
 export const supportedDatasources = [DockerDatasource.id];
diff --git a/lib/modules/manager/fleet/index.ts b/lib/modules/manager/fleet/index.ts
index 997a8501ac0598e08bec72a34314a4b9a9490c80..c864589db2f32c553bc2399f53eefda11373be1e 100644
--- a/lib/modules/manager/fleet/index.ts
+++ b/lib/modules/manager/fleet/index.ts
@@ -4,7 +4,7 @@ import { HelmDatasource } from '../../datasource/helm';
 export { extractPackageFile } from './extract';
 
 export const defaultConfig = {
-  fileMatch: ['(^|/)fleet.ya?ml'],
+  fileMatch: ['(^|/)fleet\\.ya?ml'],
 };
 
 export const supportedDatasources = [GitTagsDatasource.id, HelmDatasource.id];
diff --git a/lib/modules/manager/git-submodules/index.ts b/lib/modules/manager/git-submodules/index.ts
index a420292c7c9fcba381bfd6ad5feae440e6f5f67f..cd3da8667d822e9cee3aac36174bcc85c6ae5c17 100644
--- a/lib/modules/manager/git-submodules/index.ts
+++ b/lib/modules/manager/git-submodules/index.ts
@@ -8,7 +8,7 @@ export { default as updateArtifacts } from './artifacts';
 export const defaultConfig = {
   enabled: false,
   versioning: gitVersioning.id,
-  fileMatch: ['(^|/).gitmodules$'],
+  fileMatch: ['(^|/)\\.gitmodules$'],
 };
 
 export const supportedDatasources = [GitRefsDatasource.id];
diff --git a/lib/modules/manager/gomod/index.ts b/lib/modules/manager/gomod/index.ts
index 1e479f6e4390439537d68b2a99cf1a1010246373..271b5c125819f27312487031088fd8a83abb8a77 100644
--- a/lib/modules/manager/gomod/index.ts
+++ b/lib/modules/manager/gomod/index.ts
@@ -13,7 +13,7 @@ export const url = 'https://go.dev/ref/mod';
 export const language = ProgrammingLanguage.Golang;
 
 export const defaultConfig = {
-  fileMatch: ['(^|/)go.mod$'],
+  fileMatch: ['(^|/)go\\.mod$'],
 };
 
 export const supportedDatasources = [
diff --git a/lib/modules/manager/gradle-wrapper/index.ts b/lib/modules/manager/gradle-wrapper/index.ts
index f3b90c2237f19e67a8ebbdf3bbdc57eca343644a..76fae92837e5c934eb67eec86b7e2f6139696553 100644
--- a/lib/modules/manager/gradle-wrapper/index.ts
+++ b/lib/modules/manager/gradle-wrapper/index.ts
@@ -5,7 +5,7 @@ export { extractPackageFile } from './extract';
 export { updateArtifacts } from './artifacts';
 
 export const defaultConfig = {
-  fileMatch: ['(^|/)gradle/wrapper/gradle-wrapper.properties$'],
+  fileMatch: ['(^|/)gradle/wrapper/gradle-wrapper\\.properties$'],
   versioning,
 };
 
diff --git a/lib/modules/manager/helm-values/index.ts b/lib/modules/manager/helm-values/index.ts
index f941ce869432d7ce1cbc9f4b46e0466a8142e3dd..10f681049c9ad9e0ca4bb813fc8c7df57832d746 100644
--- a/lib/modules/manager/helm-values/index.ts
+++ b/lib/modules/manager/helm-values/index.ts
@@ -3,7 +3,7 @@ export { extractPackageFile } from './extract';
 
 export const defaultConfig = {
   commitMessageTopic: 'helm values {{depName}}',
-  fileMatch: ['(^|/)values.yaml$'],
+  fileMatch: ['(^|/)values\\.yaml$'],
   pinDigests: false,
 };
 
diff --git a/lib/modules/manager/helmfile/index.ts b/lib/modules/manager/helmfile/index.ts
index 36e82e44fff4ac5434f842ade6d7dd521b3bb323..ca2b6b099530fda25f3d668041743f8e9839f154 100644
--- a/lib/modules/manager/helmfile/index.ts
+++ b/lib/modules/manager/helmfile/index.ts
@@ -7,7 +7,7 @@ export const defaultConfig = {
     stable: 'https://charts.helm.sh/stable',
   },
   commitMessageTopic: 'helm chart {{depName}}',
-  fileMatch: ['(^|/)helmfile.yaml$'],
+  fileMatch: ['(^|/)helmfile\\.yaml$'],
 };
 
 export const supportedDatasources = [HelmDatasource.id, DockerDatasource.id];
diff --git a/lib/modules/manager/helmv3/index.ts b/lib/modules/manager/helmv3/index.ts
index b0714f85cf50370b57c90f8f49789922224bc69c..006145b5c810afc4c9ea520f24bb8f3718a4424d 100644
--- a/lib/modules/manager/helmv3/index.ts
+++ b/lib/modules/manager/helmv3/index.ts
@@ -11,7 +11,7 @@ export const defaultConfig = {
     stable: 'https://charts.helm.sh/stable',
   },
   commitMessageTopic: 'helm chart {{depName}}',
-  fileMatch: ['(^|/)Chart.yaml$'],
+  fileMatch: ['(^|/)Chart\\.yaml$'],
 };
 
 export const supportedDatasources = [DockerDatasource.id, HelmDatasource.id];
diff --git a/lib/modules/manager/jsonnet-bundler/index.ts b/lib/modules/manager/jsonnet-bundler/index.ts
index df3ddd9a4d64e70e8cf80b1a7050d7798ca7b689..fec3158e0dbe5363935a89305d26d7003a9c1516 100644
--- a/lib/modules/manager/jsonnet-bundler/index.ts
+++ b/lib/modules/manager/jsonnet-bundler/index.ts
@@ -5,7 +5,7 @@ export { extractPackageFile } from './extract';
 export const supportsLockFileMaintenance = true;
 
 export const defaultConfig = {
-  fileMatch: ['(^|/)jsonnetfile.json$'],
+  fileMatch: ['(^|/)jsonnetfile\\.json$'],
   datasource: GitTagsDatasource.id,
 };
 
diff --git a/lib/modules/manager/meteor/index.ts b/lib/modules/manager/meteor/index.ts
index 38d833b5d752358fcb2a2c0f9e46ec483e52866f..c922b28096d51a334f4cc9b08cfa767bde06bd51 100644
--- a/lib/modules/manager/meteor/index.ts
+++ b/lib/modules/manager/meteor/index.ts
@@ -6,7 +6,7 @@ export { extractPackageFile } from './extract';
 export const language = ProgrammingLanguage.JavaScript;
 
 export const defaultConfig = {
-  fileMatch: ['(^|/)package.js$'],
+  fileMatch: ['(^|/)package\\.js$'],
 };
 
 export const supportedDatasources = [NpmDatasource.id];
diff --git a/lib/modules/manager/nodenv/index.ts b/lib/modules/manager/nodenv/index.ts
index 92989c7269e3e2ded90e2bda2ac25d8c368e22e3..c5bbc91460a5775a58c8bb754ae787decfccc4d2 100644
--- a/lib/modules/manager/nodenv/index.ts
+++ b/lib/modules/manager/nodenv/index.ts
@@ -10,7 +10,7 @@ export const url = 'https://github.com/nodenv/nodenv';
 export const language = ProgrammingLanguage.NodeJS;
 
 export const defaultConfig = {
-  fileMatch: ['(^|/).node-version$'],
+  fileMatch: ['(^|/)\\.node-version$'],
   versioning: nodeVersioning.id,
 };
 
diff --git a/lib/modules/manager/npm/index.ts b/lib/modules/manager/npm/index.ts
index b43da4450719e6df319c4032d532f724b40a6df6..24a12df8d96b7ba1d24807cbe2a819526745f13c 100644
--- a/lib/modules/manager/npm/index.ts
+++ b/lib/modules/manager/npm/index.ts
@@ -16,7 +16,7 @@ export const language = ProgrammingLanguage.JavaScript;
 export const supportsLockFileMaintenance = true;
 
 export const defaultConfig = {
-  fileMatch: ['(^|/)package.json$'],
+  fileMatch: ['(^|/)package\\.json$'],
   rollbackPrs: true,
   versioning: npmVersioning.id,
   digest: {
diff --git a/lib/modules/manager/pip_setup/index.ts b/lib/modules/manager/pip_setup/index.ts
index 8b1c016a0b5da97af53ef718c1dc52f16f5f44ee..261eced13db456ef68e84ff0e18ccfa46c95bb14 100644
--- a/lib/modules/manager/pip_setup/index.ts
+++ b/lib/modules/manager/pip_setup/index.ts
@@ -6,7 +6,7 @@ export { extractPackageFile } from './extract';
 export const language = ProgrammingLanguage.Python;
 
 export const defaultConfig = {
-  fileMatch: ['(^|/)setup.py$'],
+  fileMatch: ['(^|/)setup\\.py$'],
 };
 
 export const supportedDatasources = [PypiDatasource.id];
diff --git a/lib/modules/manager/pyenv/index.ts b/lib/modules/manager/pyenv/index.ts
index 6a89e4c12021a0ecac870f9947428a3b57efa30d..e235d493492ffaa2f0d1dd1fd6291c19f38957a1 100644
--- a/lib/modules/manager/pyenv/index.ts
+++ b/lib/modules/manager/pyenv/index.ts
@@ -9,6 +9,6 @@ export const language = ProgrammingLanguage.Python;
 export const supportedDatasources = [DockerDatasource.id];
 
 export const defaultConfig = {
-  fileMatch: ['(^|/).python-version$'],
+  fileMatch: ['(^|/)\\.python-version$'],
   versioning: dockerVersioning.id,
 };
diff --git a/lib/modules/manager/travis/index.ts b/lib/modules/manager/travis/index.ts
index 4c0de0736afde129aa4ba7e8e6d8081b4539f9e4..4a03418b5d04eefa30088afee98c868489954e46 100644
--- a/lib/modules/manager/travis/index.ts
+++ b/lib/modules/manager/travis/index.ts
@@ -9,7 +9,7 @@ export const language = ProgrammingLanguage.NodeJS;
 export const supportedDatasources = [GithubTagsDatasource.id];
 
 export const defaultConfig = {
-  fileMatch: ['^.travis.yml$'],
+  fileMatch: ['^\\.travis\\.yml$'],
   major: {
     enabled: false,
   },
diff --git a/lib/modules/manager/velaci/index.ts b/lib/modules/manager/velaci/index.ts
index 4b082311045748127ccabb62fb15068188eef991..1c8489921f960dfbe7f0f0ad81ff7a4536bf6cb3 100644
--- a/lib/modules/manager/velaci/index.ts
+++ b/lib/modules/manager/velaci/index.ts
@@ -3,7 +3,7 @@ import { DockerDatasource } from '../../datasource/docker';
 export { extractPackageFile } from './extract';
 
 export const defaultConfig = {
-  fileMatch: ['(^|/).vela.ya?ml$'],
+  fileMatch: ['(^|/)\\.vela\\.ya?ml$'],
 };
 
 export const supportedDatasources = [DockerDatasource.id];
diff --git a/lib/workers/repository/extract/file-match.spec.ts b/lib/workers/repository/extract/file-match.spec.ts
index 40ba83eea67546c402dc0d67cfdc6352f987e794..85942c05c387c93ef5ceab87a623aa2be2d907ac 100644
--- a/lib/workers/repository/extract/file-match.spec.ts
+++ b/lib/workers/repository/extract/file-match.spec.ts
@@ -53,7 +53,7 @@ describe('workers/repository/extract/file-match', () => {
       includePaths: [],
       ignorePaths: [],
       manager: 'npm',
-      fileMatch: ['(^|/)package.json$'],
+      fileMatch: ['(^|/)package\\.json$'],
     };
 
     it('returns npm files', () => {