diff --git a/tfexec/add.go b/tfexec/add.go
deleted file mode 100644
index 0e60034..0000000
--- a/tfexec/add.go
+++ /dev/null
@@ -1,101 +0,0 @@
-package tfexec
-
-import (
-	"context"
-	"fmt"
-	"os/exec"
-	"strconv"
-	"strings"
-)
-
-type addConfig struct {
-	fromState       bool
-	out             string
-	includeOptional bool
-	provider        string
-	reattachInfo    ReattachInfo
-}
-
-var defaultAddOptions = addConfig{}
-
-type AddOption interface {
-	configureAdd(*addConfig)
-}
-
-func (opt *FromStateOption) configureAdd(conf *addConfig) {
-	conf.fromState = opt.fromState
-}
-
-func (opt *OutOption) configureAdd(conf *addConfig) {
-	conf.out = opt.path
-}
-
-func (opt *IncludeOptionalOption) configureAdd(conf *addConfig) {
-	conf.includeOptional = opt.includeOptional
-}
-
-func (opt *ProviderOption) configureAdd(conf *addConfig) {
-	conf.provider = opt.provider
-}
-
-func (opt *ReattachOption) configureAdd(conf *addConfig) {
-	conf.reattachInfo = opt.info
-}
-
-// Add represents the `terraform add` subcommand (added in 1.1.0).
-//
-// Note that this function signature and behaviour is subject
-// to breaking changes including removal of that function
-// until final 1.1.0 Terraform version (with this command) is released.
-func (tf *Terraform) Add(ctx context.Context, address string, opts ...AddOption) (string, error) {
-	cmd, err := tf.addCmd(ctx, address, opts...)
-	if err != nil {
-		return "", err
-	}
-
-	var outBuf strings.Builder
-	cmd.Stdout = mergeWriters(cmd.Stdout, &outBuf)
-
-	if err := tf.runTerraformCmd(ctx, cmd); err != nil {
-		return "", err
-	}
-
-	return outBuf.String(), nil
-}
-
-func (tf *Terraform) addCmd(ctx context.Context, address string, opts ...AddOption) (*exec.Cmd, error) {
-	err := tf.compatible(ctx, tf1_1_0, nil)
-	if err != nil {
-		return nil, fmt.Errorf("terraform add was added in 1.1.0: %w", err)
-	}
-
-	c := defaultAddOptions
-
-	for _, o := range opts {
-		o.configureAdd(&c)
-	}
-
-	args := []string{"add"}
-
-	args = append(args, "-from-state="+strconv.FormatBool(c.fromState))
-	if c.out != "" {
-		args = append(args, "-out="+c.out)
-	}
-	args = append(args, "-optional="+strconv.FormatBool(c.includeOptional))
-	if c.provider != "" {
-		args = append(args, "-provider="+c.provider)
-	}
-
-	args = append(args, address)
-
-	mergeEnv := map[string]string{}
-	if c.reattachInfo != nil {
-		reattachStr, err := c.reattachInfo.marshalString()
-		if err != nil {
-			return nil, err
-		}
-		mergeEnv[reattachEnvVar] = reattachStr
-	}
-
-	return tf.buildTerraformCmd(ctx, mergeEnv, args...), nil
-}
diff --git a/tfexec/add_test.go b/tfexec/add_test.go
deleted file mode 100644
index cfe92ae..0000000
--- a/tfexec/add_test.go
+++ /dev/null
@@ -1,56 +0,0 @@
-package tfexec
-
-import (
-	"context"
-	"testing"
-
-	"github.com/hashicorp/terraform-exec/tfexec/internal/testutil"
-)
-
-func TestAddCmd(t *testing.T) {
-	td := t.TempDir()
-
-	tf, err := NewTerraform(td, tfVersion(t, testutil.Latest_v1_1))
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	// empty env, to avoid environ mismatch in testing
-	tf.SetEnv(map[string]string{})
-
-	t.Run("default", func(t *testing.T) {
-		addCmd, err := tf.addCmd(context.Background(), "my-addr")
-		if err != nil {
-			t.Fatal(err)
-		}
-
-		assertCmd(t, []string{
-			"add",
-			"-from-state=false",
-			"-optional=false",
-			"my-addr",
-		}, nil, addCmd)
-	})
-
-	t.Run("override-default", func(t *testing.T) {
-		addCmd, err := tf.addCmd(context.Background(),
-			"my-addr",
-			FromState(true),
-			Out("out"),
-			IncludeOptional(true),
-			Provider("my-provider"),
-		)
-		if err != nil {
-			t.Fatal(err)
-		}
-
-		assertCmd(t, []string{
-			"add",
-			"-from-state=true",
-			"-out=out",
-			"-optional=true",
-			"-provider=my-provider",
-			"my-addr",
-		}, nil, addCmd)
-	})
-}
diff --git a/tfexec/options.go b/tfexec/options.go
index fb2d5bd..7163889 100644
--- a/tfexec/options.go
+++ b/tfexec/options.go
@@ -373,21 +373,3 @@
 func VerifyPlugins(verifyPlugins bool) *VerifyPluginsOption {
 	return &VerifyPluginsOption{verifyPlugins}
 }
-
-// FromStateOption represents the -from-state option of the "terraform add" command.
-type FromStateOption struct {
-	fromState bool
-}
-
-func FromState(fromState bool) *FromStateOption {
-	return &FromStateOption{fromState}
-}
-
-// IncludeOptionalOption represents the -optional option of the "terraform add" command.
-type IncludeOptionalOption struct {
-	includeOptional bool
-}
-
-func IncludeOptional(includeOptional bool) *IncludeOptionalOption {
-	return &IncludeOptionalOption{includeOptional}
-}