diff --git a/cmd/pint/ci.go b/cmd/pint/ci.go
index c122bedb..188ef224 100644
--- a/cmd/pint/ci.go
+++ b/cmd/pint/ci.go
@@ -19,6 +19,8 @@ import (
 	"github.com/urfave/cli/v2"
 )
 
+var baseBranchFlag = "base-branch"
+
 var ciCmd = &cli.Command{
 	Name:   "ci",
 	Usage:  "Lint CI changes",
@@ -30,6 +32,12 @@ var ciCmd = &cli.Command{
 			Value:   false,
 			Usage:   "Require all rules to have an owner set via comment",
 		},
+		&cli.StringFlag{
+			Name:    baseBranchFlag,
+			Aliases: []string{"b"},
+			Value:   "",
+			Usage:   "Set base branch to use for PR checks (main, master, ...)",
+		},
 	},
 }
 
@@ -45,6 +53,9 @@ func actionCI(c *cli.Context) error {
 	}
 
 	baseBranch := strings.Split(meta.cfg.CI.BaseBranch, "/")[len(strings.Split(meta.cfg.CI.BaseBranch, "/"))-1]
+	if c.String(baseBranchFlag) != "" {
+		baseBranch = c.String(baseBranchFlag)
+	}
 	currentBranch, err := git.CurrentBranch(git.RunGit)
 	if err != nil {
 		return fmt.Errorf("failed to get the name of current branch")
diff --git a/cmd/pint/tests/0082_ci_base_branch_flag.txt b/cmd/pint/tests/0082_ci_base_branch_flag.txt
new file mode 100644
index 00000000..e1ba4a75
--- /dev/null
+++ b/cmd/pint/tests/0082_ci_base_branch_flag.txt
@@ -0,0 +1,33 @@
+mkdir testrepo
+cd testrepo
+exec git init --initial-branch=main .
+
+cp ../src/v1.yml rules.yml
+cp ../src/.pint.hcl .
+env GIT_AUTHOR_NAME=pint
+env GIT_AUTHOR_EMAIL=pint@example.com
+env GIT_COMMITTER_NAME=pint
+env GIT_COMMITTER_EMAIL=pint@example.com
+exec git add .
+exec git commit -am 'import rules and config'
+
+pint.ok --no-color ci --base-branch=main
+! stdout .
+cmp stderr ../stderr.txt
+
+-- stderr.txt --
+level=info msg="Loading configuration file" path=.pint.hcl
+level=info msg="Running from base branch, skipping checks" branch=main
+-- src/v1.yml --
+- record: rule1
+  expr: sum(foo) by(job)
+- record: rule2
+  expr: sum(foo) bi(job)
+
+-- src/.pint.hcl --
+ci {
+  baseBranch = "foo"
+}
+parser {
+  relaxed = [".*"]
+}
diff --git a/docs/changelog.md b/docs/changelog.md
index 5b605237..39ee11d1 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -6,6 +6,10 @@
 
 - Fixed line reporting on some strict parser errors.
 
+### Added
+
+- Added `--base-branch` flag to `pint ci` command.
+
 ## v0.24.0
 
 ### Added