diff --git a/package.json b/package.json
index a052fdc..bacc705 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
 	],
 	"scripts": {
 		"watch": "jest --watchAll",
-		"jest": "jest --coverage",
+		"jest": "TRAVIS_PULL_REQUEST_BRANCH=master jest --coverage",
 		"lint": "eslint ./",
 		"lint:fix": "eslint --fix ./",
 		"test": "yarn lint && yarn jest",
diff --git a/test/helpers/git.js b/test/helpers/git.js
index 6692860..e6ff6a3 100644
--- a/test/helpers/git.js
+++ b/test/helpers/git.js
@@ -9,7 +9,6 @@ const execa = require("execa");
 const fileUrl = require("file-url");
 const gitLogParser = require("git-log-parser");
 const { array: getStreamArray } = require("get-stream");
-const envCi = require("env-ci");
 
 /**
  * @typedef {Object} Commit
@@ -165,26 +164,6 @@ function gitPush(cwd, remote = "origin", branch = "master") {
 
 // Branches.
 
-/**
- * Return current git branch.
- * @param {string} cwd The CWD of the Git repository.
- * @returns {execa.ExecaSyncReturnValue} Branch name
- */
-function gitReleaseBranch() {
-	const ciCxt = envCi();
-	const { prBranch, isPr } = ciCxt;
-
-	return isPr ? prBranch : "master";
-}
-
-/**
- * Return the list of release branches.
- * @returns {string[]} Branch name
- */
-function gitReleaseBranches() {
-	return ["master"];
-}
-
 /**
  * Create a branch in a local Git repository.
  *
@@ -336,6 +315,4 @@ module.exports = {
 	gitGetTagHash,
 	gitConfig,
 	gitGetConfig,
-	gitReleaseBranch,
-	gitReleaseBranches,
 };
diff --git a/test/lib/multiSemanticRelease.test.js b/test/lib/multiSemanticRelease.test.js
index ad16961..677d46f 100644
--- a/test/lib/multiSemanticRelease.test.js
+++ b/test/lib/multiSemanticRelease.test.js
@@ -12,7 +12,6 @@ const {
 	gitPush,
 	gitTag,
 	gitGetTags,
-	gitReleaseBranches,
 } = require("../helpers/git");
 
 // Clear mocks before tests.
@@ -26,7 +25,6 @@ describe("multiSemanticRelease()", () => {
 	test("Initial commit (changes in all packages)", async () => {
 		// Create Git repo with copy of Yarn workspaces fixture.
 		const cwd = gitInit();
-		const branches = gitReleaseBranches();
 		copyDirectory(`test/fixtures/yarnWorkspaces/`, cwd);
 		const sha = gitCommitAll(cwd, "feat: Initial release");
 		const url = gitInitOrigin(cwd);
@@ -46,7 +44,7 @@ describe("multiSemanticRelease()", () => {
 				`packages/c/package.json`,
 				`packages/d/package.json`,
 			],
-			{ branches },
+			{},
 			{ cwd, stdout, stderr }
 		);
 
@@ -147,7 +145,6 @@ describe("multiSemanticRelease()", () => {
 	test("No changes in any packages", async () => {
 		// Create Git repo with copy of Yarn workspaces fixture.
 		const cwd = gitInit();
-		const branches = gitReleaseBranches();
 		copyDirectory(`test/fixtures/yarnWorkspaces/`, cwd);
 		const sha = gitCommitAll(cwd, "feat: Initial release");
 		// Creating the four tags so there are no changes in any packages.
@@ -172,7 +169,7 @@ describe("multiSemanticRelease()", () => {
 				`packages/d/package.json`,
 				`packages/b/package.json`,
 			],
-			{ branches },
+			{},
 			{ cwd, stdout, stderr }
 		);
 
@@ -200,7 +197,6 @@ describe("multiSemanticRelease()", () => {
 	test("Changes in some packages", async () => {
 		// Create Git repo.
 		const cwd = gitInit();
-		const branches = gitReleaseBranches();
 		// Initial commit.
 		copyDirectory(`test/fixtures/yarnWorkspaces/`, cwd);
 		const sha1 = gitCommitAll(cwd, "feat: Initial release");
@@ -228,7 +224,7 @@ describe("multiSemanticRelease()", () => {
 				`packages/b/package.json`,
 				`packages/a/package.json`,
 			],
-			{ branches },
+			{},
 			{ cwd, stdout, stderr }
 		);
 
@@ -336,7 +332,6 @@ describe("multiSemanticRelease()", () => {
 	test("Error if release's local deps have no version number", async () => {
 		// Create Git repo with copy of Yarn workspaces fixture.
 		const cwd = gitInit();
-		const branches = gitReleaseBranches();
 		copyDirectory(`test/fixtures/yarnWorkspaces/`, cwd);
 		gitAdd(cwd, "packages/a/package.json");
 		const sha = gitCommit(cwd, "feat: Commit first package only");
@@ -352,7 +347,7 @@ describe("multiSemanticRelease()", () => {
 			const multiSemanticRelease = require("../../");
 			const result = await multiSemanticRelease(
 				[`packages/a/package.json`, `packages/c/package.json`],
-				{ branches },
+				{},
 				{ cwd, stdout, stderr }
 			);
 
@@ -365,7 +360,6 @@ describe("multiSemanticRelease()", () => {
 	test("Configured plugins are called as normal", async () => {
 		// Create Git repo with copy of Yarn workspaces fixture.
 		const cwd = gitInit();
-		const branches = gitReleaseBranches();
 		copyDirectory(`test/fixtures/yarnWorkspaces/`, cwd);
 		const sha = gitCommitAll(cwd, "feat: Initial release");
 		const url = gitInitOrigin(cwd);
@@ -394,7 +388,6 @@ describe("multiSemanticRelease()", () => {
 				// Override to add our own plugins.
 				plugins: ["@semantic-release/release-notes-generator", plugin],
 				analyzeCommits: ["@semantic-release/commit-analyzer"],
-				branches,
 			},
 			{ cwd, stdout, stderr }
 		);
@@ -411,7 +404,6 @@ describe("multiSemanticRelease()", () => {
 	test("Deep errors (e.g. in plugins) bubble up and out", async () => {
 		// Create Git repo with copy of Yarn workspaces fixture.
 		const cwd = gitInit();
-		const branches = gitReleaseBranches();
 		copyDirectory(`test/fixtures/yarnWorkspaces/`, cwd);
 		const sha = gitCommitAll(cwd, "feat: Initial release");
 		const url = gitInitOrigin(cwd);
@@ -438,7 +430,6 @@ describe("multiSemanticRelease()", () => {
 							},
 						},
 					],
-					branches,
 				},
 				{ cwd, stdout, stderr }
 			);