diff --git a/internal/bitbucket/bitbucket.go b/internal/bitbucket/bitbucket.go
index 06111903..f6819df2 100644
--- a/internal/bitbucket/bitbucket.go
+++ b/internal/bitbucket/bitbucket.go
@@ -181,6 +181,9 @@ func NewClient(workspace, repoSlug string, opts ...ClientOption) (*Client, error
 			return nil, err
 		}
 	}
+	if c.baseURL == "" {
+		c.baseURL = DefaultBaseURL
+	}
 	return c, nil
 }
 
diff --git a/internal/github/github.go b/internal/github/github.go
index 3e85a94c..acbc1084 100644
--- a/internal/github/github.go
+++ b/internal/github/github.go
@@ -102,6 +102,9 @@ func NewClient(repo string, opts ...ClientOption) (*Client, error) {
 			return nil, err
 		}
 	}
+	if c.baseURL == "" {
+		c.baseURL = DefaultBaseURL
+	}
 	return c, nil
 }
 
diff --git a/internal/gitlab/gitlab.go b/internal/gitlab/gitlab.go
index e281888d..a16e46e3 100644
--- a/internal/gitlab/gitlab.go
+++ b/internal/gitlab/gitlab.go
@@ -61,6 +61,9 @@ func NewClient(project string, opts ...ClientOption) (*Client, error) {
 			return nil, err
 		}
 	}
+	if c.baseURL == "" {
+		c.baseURL = DefaultBaseURL
+	}
 	return c, nil
 }