diff --git a/bridge/core/bridge.go b/bridge/core/bridge.go
index 9a46e7b1d287540d1a565268778d87e841571c35..c6731ff9a06ceeea306a1950bc62ebb517d3d3b6 100644
--- a/bridge/core/bridge.go
+++ b/bridge/core/bridge.go
@@ -35,6 +35,7 @@ type BridgeParams struct {
 	Owner      string
 	Project    string
 	URL        string
+	BaseURL    string
 	CredPrefix string
 	TokenRaw   string
 }
diff --git a/bridge/github/config.go b/bridge/github/config.go
index a74e7f6b8fa5051b810c066d831ea94fa9fd84ba..bc26a2fc740c6e01be8899405f25cbf263b3bd11 100644
--- a/bridge/github/config.go
+++ b/bridge/github/config.go
@@ -44,6 +44,10 @@ var (
 )
 
 func (g *Github) Configure(repo *cache.RepoCache, params core.BridgeParams) (core.Configuration, error) {
+	if params.BaseURL != "" {
+		fmt.Println("warning: --base-url is ineffective for a Github bridge")
+	}
+
 	conf := make(core.Configuration)
 	var err error
 
diff --git a/bridge/gitlab/config.go b/bridge/gitlab/config.go
index 7bc2e577b0ac3fab53a4bb329de80c482e2f41b1..99c27836dd87dedbbb020f6ae9db35f9df1be24c 100644
--- a/bridge/gitlab/config.go
+++ b/bridge/gitlab/config.go
@@ -42,6 +42,10 @@ func (g *Gitlab) Configure(repo *cache.RepoCache, params core.BridgeParams) (cor
 		return nil, fmt.Errorf("you must provide a project URL to configure this bridge with a token")
 	}
 
+	if params.URL == "" {
+		params.URL = defaultBaseURL
+	}
+
 	var url string
 
 	// get project url
@@ -56,6 +60,10 @@ func (g *Gitlab) Configure(repo *cache.RepoCache, params core.BridgeParams) (cor
 		}
 	}
 
+	if !strings.HasPrefix(url, params.BaseURL) {
+		return nil, fmt.Errorf("base URL (%s) doesn't match the project URL (%s)", params.BaseURL, url)
+	}
+
 	user, err := repo.GetUserIdentity()
 	if err != nil {
 		return nil, err
@@ -87,13 +95,14 @@ func (g *Gitlab) Configure(repo *cache.RepoCache, params core.BridgeParams) (cor
 	}
 
 	// validate project url and get its ID
-	id, err := validateProjectURL(url, token)
+	id, err := validateProjectURL(params.BaseURL, url, token)
 	if err != nil {
 		return nil, errors.Wrap(err, "project validation")
 	}
 
 	conf[core.ConfigKeyTarget] = target
 	conf[keyProjectID] = strconv.Itoa(id)
+	conf[keyGitlabBaseUrl] = params.BaseURL
 
 	err = g.ValidateConfig(conf)
 	if err != nil {
@@ -302,13 +311,16 @@ func getValidGitlabRemoteURLs(remotes map[string]string) []string {
 	return urls
 }
 
-func validateProjectURL(url string, token *auth.Token) (int, error) {
+func validateProjectURL(baseURL, url string, token *auth.Token) (int, error) {
 	projectPath, err := getProjectPath(url)
 	if err != nil {
 		return 0, err
 	}
 
-	client := buildClient(token)
+	client, err := buildClient(baseURL, token)
+	if err != nil {
+		return 0, err
+	}
 
 	project, _, err := client.Projects.GetProject(projectPath, &gitlab.GetProjectOptions{})
 	if err != nil {
diff --git a/bridge/gitlab/export.go b/bridge/gitlab/export.go
index 373cf637e18a5093e85d060d4e8d83f281798672..d42ef1cdf1b6311b5272fc6451c3bb0fd7d20883 100644
--- a/bridge/gitlab/export.go
+++ b/bridge/gitlab/export.go
@@ -62,7 +62,11 @@ func (ge *gitlabExporter) cacheAllClient(repo repository.RepoConfig) error {
 
 	for _, cred := range creds {
 		if _, ok := ge.identityClient[cred.UserId()]; !ok {
-			client := buildClient(creds[0].(*auth.Token))
+			client, err := buildClient(ge.conf[keyGitlabBaseUrl], creds[0].(*auth.Token))
+			if err != nil {
+				return err
+			}
+
 			ge.identityClient[cred.UserId()] = client
 		}
 	}
@@ -133,6 +137,7 @@ func (ge *gitlabExporter) exportBug(ctx context.Context, b *cache.BugCache, sinc
 	var err error
 	var bugGitlabID int
 	var bugGitlabIDString string
+	var GitlabBaseUrl string
 	var bugCreationId string
 
 	// Special case:
@@ -153,6 +158,12 @@ func (ge *gitlabExporter) exportBug(ctx context.Context, b *cache.BugCache, sinc
 	// get gitlab bug ID
 	gitlabID, ok := snapshot.GetCreateMetadata(metaKeyGitlabId)
 	if ok {
+		gitlabBaseUrl, ok := snapshot.GetCreateMetadata(metaKeyGitlabBaseUrl)
+		if ok && gitlabBaseUrl != ge.conf[gitlabBaseUrl] {
+			out <- core.NewExportNothing(b.Id(), "skipping issue imported from another Gitlab instance")
+			return
+		}
+
 		projectID, ok := snapshot.GetCreateMetadata(metaKeyGitlabProject)
 		if !ok {
 			err := fmt.Errorf("expected to find gitlab project id")
@@ -199,6 +210,7 @@ func (ge *gitlabExporter) exportBug(ctx context.Context, b *cache.BugCache, sinc
 				metaKeyGitlabId:      idString,
 				metaKeyGitlabUrl:     url,
 				metaKeyGitlabProject: ge.repositoryID,
+				metaKeyGitlabBaseUrl: GitlabBaseUrl,
 			},
 		)
 		if err != nil {
diff --git a/bridge/gitlab/export_test.go b/bridge/gitlab/export_test.go
index 645e2d7692f84e7c94a95b34a1c561573cca5083..d16defd007468fb454d2d6ff3fbc75618fb6ea0c 100644
--- a/bridge/gitlab/export_test.go
+++ b/bridge/gitlab/export_test.go
@@ -188,7 +188,8 @@ func TestPushPull(t *testing.T) {
 	// initialize exporter
 	exporter := &gitlabExporter{}
 	err = exporter.Init(backend, core.Configuration{
-		keyProjectID: strconv.Itoa(projectID),
+		keyProjectID:     strconv.Itoa(projectID),
+		keyGitlabBaseUrl: "https://gitlab.com/",
 	})
 	require.NoError(t, err)
 
@@ -215,7 +216,8 @@ func TestPushPull(t *testing.T) {
 
 	importer := &gitlabImporter{}
 	err = importer.Init(backend, core.Configuration{
-		keyProjectID: strconv.Itoa(projectID),
+		keyProjectID:     strconv.Itoa(projectID),
+		keyGitlabBaseUrl: "https://gitlab.com/",
 	})
 	require.NoError(t, err)
 
@@ -280,7 +282,11 @@ func generateRepoName() string {
 
 // create repository need a token with scope 'repo'
 func createRepository(ctx context.Context, name string, token *auth.Token) (int, error) {
-	client := buildClient(token)
+	client, err := buildClient("https://gitlab.com/", token)
+	if err != nil {
+		return 0, err
+	}
+
 	project, _, err := client.Projects.CreateProject(
 		&gitlab.CreateProjectOptions{
 			Name: gitlab.String(name),
@@ -296,7 +302,11 @@ func createRepository(ctx context.Context, name string, token *auth.Token) (int,
 
 // delete repository need a token with scope 'delete_repo'
 func deleteRepository(ctx context.Context, project int, token *auth.Token) error {
-	client := buildClient(token)
-	_, err := client.Projects.DeleteProject(project, gitlab.WithContext(ctx))
+	client, err := buildClient("https://gitlab.com/", token)
+	if err != nil {
+		return err
+	}
+
+	_, err = client.Projects.DeleteProject(project, gitlab.WithContext(ctx))
 	return err
 }
diff --git a/bridge/gitlab/gitlab.go b/bridge/gitlab/gitlab.go
index bcc50e4cce2b7389c949d5699dc5178f10e4d9c5..9298dc8edbb7dae90c1e8048c21fa29b20596f8e 100644
--- a/bridge/gitlab/gitlab.go
+++ b/bridge/gitlab/gitlab.go
@@ -17,9 +17,12 @@ const (
 	metaKeyGitlabUrl     = "gitlab-url"
 	metaKeyGitlabLogin   = "gitlab-login"
 	metaKeyGitlabProject = "gitlab-project-id"
+	metaKeyGitlabBaseUrl = "gitlab-base-url"
 
-	keyProjectID = "project-id"
+	keyProjectID     = "project-id"
+	keyGitlabBaseUrl = "base-url"
 
+	defaultBaseURL = "https://gitlab.com/"
 	defaultTimeout = 60 * time.Second
 )
 
@@ -37,10 +40,16 @@ func (*Gitlab) NewExporter() core.Exporter {
 	return &gitlabExporter{}
 }
 
-func buildClient(token *auth.Token) *gitlab.Client {
-	client := &http.Client{
+func buildClient(baseURL string, token *auth.Token) (*gitlab.Client, error) {
+	httpClient := &http.Client{
 		Timeout: defaultTimeout,
 	}
 
-	return gitlab.NewClient(client, token.Value)
+	gitlabClient := gitlab.NewClient(httpClient, token.Value)
+	err := gitlabClient.SetBaseURL(baseURL)
+	if err != nil {
+		return nil, err
+	}
+
+	return gitlabClient, nil
 }
diff --git a/bridge/gitlab/import.go b/bridge/gitlab/import.go
index 00dee25215f4b6cb82d9f00e06ba01fea0378430..4fa375055d8e7aa9df95d60d91bf677f8c264f85 100644
--- a/bridge/gitlab/import.go
+++ b/bridge/gitlab/import.go
@@ -52,7 +52,10 @@ func (gi *gitlabImporter) Init(repo *cache.RepoCache, conf core.Configuration) e
 		return ErrMissingIdentityToken
 	}
 
-	gi.client = buildClient(creds[0].(*auth.Token))
+	gi.client, err = buildClient(conf[keyGitlabBaseUrl], creds[0].(*auth.Token))
+	if err != nil {
+		return err
+	}
 
 	return nil
 }
@@ -151,6 +154,7 @@ func (gi *gitlabImporter) ensureIssue(repo *cache.RepoCache, issue *gitlab.Issue
 			metaKeyGitlabId:      parseID(issue.IID),
 			metaKeyGitlabUrl:     issue.WebURL,
 			metaKeyGitlabProject: gi.conf[keyProjectID],
+			metaKeyGitlabBaseUrl: gi.conf[keyGitlabBaseUrl],
 		},
 	)
 
diff --git a/bridge/gitlab/import_test.go b/bridge/gitlab/import_test.go
index 1676bdf35bd62820ac96c493b2c6ebe4fa4583a7..6e378b075432da5a0c7d4fdf22e3ba4bdc705562 100644
--- a/bridge/gitlab/import_test.go
+++ b/bridge/gitlab/import_test.go
@@ -103,7 +103,8 @@ func TestImport(t *testing.T) {
 
 	importer := &gitlabImporter{}
 	err = importer.Init(backend, core.Configuration{
-		keyProjectID: projectID,
+		keyProjectID:     projectID,
+		keyGitlabBaseUrl: "https://gitlab.com",
 	})
 	require.NoError(t, err)
 
diff --git a/bridge/launchpad/config.go b/bridge/launchpad/config.go
index 8db39100cf8bbaa752a426f0739a88d7543e4b6f..edbd941d9a44971bceb0ccf8c3d9ca55ab795445 100644
--- a/bridge/launchpad/config.go
+++ b/bridge/launchpad/config.go
@@ -29,6 +29,9 @@ func (l *Launchpad) Configure(repo *cache.RepoCache, params core.BridgeParams) (
 	if params.Owner != "" {
 		fmt.Println("warning: --owner is ineffective for a Launchpad bridge")
 	}
+	if params.BaseURL != "" {
+		fmt.Println("warning: --base-url is ineffective for a Launchpad bridge")
+	}
 
 	conf := make(core.Configuration)
 	var err error
diff --git a/commands/bridge_configure.go b/commands/bridge_configure.go
index 00634b287dcf6674938768a18c1fbd0e564bed6c..26bd7bc22c6de74527ac94e56324826f7204264e 100644
--- a/commands/bridge_configure.go
+++ b/commands/bridge_configure.go
@@ -216,6 +216,7 @@ func init() {
 	bridgeConfigureCmd.Flags().StringVarP(&bridgeConfigureTarget, "target", "t", "",
 		fmt.Sprintf("The target of the bridge. Valid values are [%s]", strings.Join(bridge.Targets(), ",")))
 	bridgeConfigureCmd.Flags().StringVarP(&bridgeConfigureParams.URL, "url", "u", "", "The URL of the target repository")
+	bridgeConfigureCmd.Flags().StringVarP(&bridgeConfigureParams.BaseURL, "base-url", "b", "", "The base URL of your issue tracker service")
 	bridgeConfigureCmd.Flags().StringVarP(&bridgeConfigureParams.Owner, "owner", "o", "", "The owner of the target repository")
 	bridgeConfigureCmd.Flags().StringVarP(&bridgeConfigureParams.CredPrefix, "credential", "c", "", "The identifier or prefix of an already known credential for the API (see \"git-bug bridge auth\")")
 	bridgeConfigureCmd.Flags().StringVar(&bridgeConfigureToken, "token", "", "A raw authentication token for the API")
diff --git a/doc/man/git-bug-bridge-configure.1 b/doc/man/git-bug-bridge-configure.1
index 14b773a6335081fd776605ef38f3afba6d94bd92..d1dc9f7dcef3dc2d05e29b1b8c9ac15ab14512df 100644
--- a/doc/man/git-bug-bridge-configure.1
+++ b/doc/man/git-bug-bridge-configure.1
@@ -39,6 +39,10 @@ Token configuration can be directly passed with the \-\-token flag or in the ter
 \fB\-u\fP, \fB\-\-url\fP=""
     The URL of the target repository
 
+.PP
+\fB\-b\fP, \fB\-\-base\-url\fP=""
+    The base URL of your issue tracker service
+
 .PP
 \fB\-o\fP, \fB\-\-owner\fP=""
     The owner of the target repository
diff --git a/doc/md/git-bug_bridge_configure.md b/doc/md/git-bug_bridge_configure.md
index 73121072e271816ced98076bbed782e4ff210872..c0f89cf3da89cad9546c44b610e9640e0fa02378 100644
--- a/doc/md/git-bug_bridge_configure.md
+++ b/doc/md/git-bug_bridge_configure.md
@@ -73,6 +73,7 @@ git bug bridge configure \
   -n, --name string         A distinctive name to identify the bridge
   -t, --target string       The target of the bridge. Valid values are [github,gitlab,launchpad-preview]
   -u, --url string          The URL of the target repository
+  -b, --base-url string     The base URL of your issue tracker service
   -o, --owner string        The owner of the target repository
   -c, --credential string   The identifier or prefix of an already known credential for the API (see "git-bug bridge auth")
       --token string        A raw authentication token for the API
diff --git a/misc/bash_completion/git-bug b/misc/bash_completion/git-bug
index 707369c5523c29a15791fcfe41e7581226aab594..557bbf2094454ca8049a47c98971480699716214 100644
--- a/misc/bash_completion/git-bug
+++ b/misc/bash_completion/git-bug
@@ -400,6 +400,10 @@ _git-bug_bridge_configure()
     two_word_flags+=("--url")
     two_word_flags+=("-u")
     local_nonpersistent_flags+=("--url=")
+    flags+=("--base-url=")
+    two_word_flags+=("--base-url")
+    two_word_flags+=("-b")
+    local_nonpersistent_flags+=("--base-url=")
     flags+=("--owner=")
     two_word_flags+=("--owner")
     two_word_flags+=("-o")
diff --git a/misc/powershell_completion/git-bug b/misc/powershell_completion/git-bug
index b6086f276164fb511d703c2ef994e1bccb5f7fe0..d52113e4b75fffc4d91a9c9cf3a87a8b7e47d9a6 100644
--- a/misc/powershell_completion/git-bug
+++ b/misc/powershell_completion/git-bug
@@ -79,6 +79,8 @@ Register-ArgumentCompleter -Native -CommandName 'git-bug' -ScriptBlock {
             [CompletionResult]::new('--target', 'target', [CompletionResultType]::ParameterName, 'The target of the bridge. Valid values are [github,gitlab,launchpad-preview]')
             [CompletionResult]::new('-u', 'u', [CompletionResultType]::ParameterName, 'The URL of the target repository')
             [CompletionResult]::new('--url', 'url', [CompletionResultType]::ParameterName, 'The URL of the target repository')
+            [CompletionResult]::new('-b', 'b', [CompletionResultType]::ParameterName, 'The base URL of your issue tracker service')
+            [CompletionResult]::new('--base-url', 'base-url', [CompletionResultType]::ParameterName, 'The base URL of your issue tracker service')
             [CompletionResult]::new('-o', 'o', [CompletionResultType]::ParameterName, 'The owner of the target repository')
             [CompletionResult]::new('--owner', 'owner', [CompletionResultType]::ParameterName, 'The owner of the target repository')
             [CompletionResult]::new('-c', 'c', [CompletionResultType]::ParameterName, 'The identifier or prefix of an already known credential for the API (see "git-bug bridge auth")')
diff --git a/misc/zsh_completion/git-bug b/misc/zsh_completion/git-bug
index a0b4840ba1cd8a6570cd96e1850ae96cbe9a29a1..3b06a3963af63e72262828efddbe4a0f2303b8a4 100644
--- a/misc/zsh_completion/git-bug
+++ b/misc/zsh_completion/git-bug
@@ -193,6 +193,7 @@ function _git-bug_bridge_configure {
     '(-n --name)'{-n,--name}'[A distinctive name to identify the bridge]:' \
     '(-t --target)'{-t,--target}'[The target of the bridge. Valid values are [github,gitlab,launchpad-preview]]:' \
     '(-u --url)'{-u,--url}'[The URL of the target repository]:' \
+    '(-b --base-url)'{-b,--base-url}'[The base URL of your issue tracker service]:' \
     '(-o --owner)'{-o,--owner}'[The owner of the target repository]:' \
     '(-c --credential)'{-c,--credential}'[The identifier or prefix of an already known credential for the API (see "git-bug bridge auth")]:' \
     '--token[A raw authentication token for the API]:' \