diff --git a/checksum/checksum.go b/internal/checksum/checksum.go
similarity index 98%
rename from checksum/checksum.go
rename to internal/checksum/checksum.go
index cebfb31b..e9d1c9e4 100644
--- a/checksum/checksum.go
+++ b/internal/checksum/checksum.go
@@ -9,8 +9,8 @@ import (
 	"path/filepath"
 	"sort"
 
-	"github.com/lets-cli/lets/set"
-	"github.com/lets-cli/lets/util"
+	"github.com/lets-cli/lets/internal/set"
+	"github.com/lets-cli/lets/internal/util"
 )
 
 const (
diff --git a/checksum/checksum_test.go b/internal/checksum/checksum_test.go
similarity index 98%
rename from checksum/checksum_test.go
rename to internal/checksum/checksum_test.go
index 5085dc5f..d7a221ce 100644
--- a/checksum/checksum_test.go
+++ b/internal/checksum/checksum_test.go
@@ -5,7 +5,7 @@ import (
 	"os"
 	"testing"
 
-	"github.com/lets-cli/lets/test"
+	"github.com/lets-cli/lets/internal/test"
 )
 
 // get filename without last 4 chars - to make tests more predictable.
diff --git a/cmd/completion.go b/internal/cmd/completion.go
similarity index 98%
rename from cmd/completion.go
rename to internal/cmd/completion.go
index 5fd57233..95b96982 100644
--- a/cmd/completion.go
+++ b/internal/cmd/completion.go
@@ -8,8 +8,8 @@ import (
 	"strings"
 	"text/template"
 
-	"github.com/lets-cli/lets/config/config"
-	"github.com/lets-cli/lets/docopt"
+	"github.com/lets-cli/lets/internal/config/config"
+	"github.com/lets-cli/lets/internal/docopt"
 	"github.com/spf13/cobra"
 )
 
diff --git a/cmd/lsp.go b/internal/cmd/lsp.go
similarity index 91%
rename from cmd/lsp.go
rename to internal/cmd/lsp.go
index e5b7b87f..2a4eff06 100644
--- a/cmd/lsp.go
+++ b/internal/cmd/lsp.go
@@ -1,7 +1,7 @@
 package cmd
 
 import (
-	"github.com/lets-cli/lets/lsp"
+	"github.com/lets-cli/lets/internal/lsp"
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 )
diff --git a/cmd/root.go b/internal/cmd/root.go
similarity index 99%
rename from cmd/root.go
rename to internal/cmd/root.go
index f518c769..eaf7ae31 100644
--- a/cmd/root.go
+++ b/internal/cmd/root.go
@@ -7,7 +7,7 @@ import (
 	"sort"
 	"strings"
 
-	"github.com/lets-cli/lets/set"
+	"github.com/lets-cli/lets/internal/set"
 	"github.com/spf13/cobra"
 )
 
diff --git a/cmd/root_test.go b/internal/cmd/root_test.go
similarity index 99%
rename from cmd/root_test.go
rename to internal/cmd/root_test.go
index 180407d6..8b3112d9 100644
--- a/cmd/root_test.go
+++ b/internal/cmd/root_test.go
@@ -6,7 +6,7 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/lets-cli/lets/config/config"
+	"github.com/lets-cli/lets/internal/config/config"
 	"github.com/spf13/cobra"
 )
 
diff --git a/cmd/self.go b/internal/cmd/self.go
similarity index 100%
rename from cmd/self.go
rename to internal/cmd/self.go
diff --git a/cmd/subcommand.go b/internal/cmd/subcommand.go
similarity index 98%
rename from cmd/subcommand.go
rename to internal/cmd/subcommand.go
index 759c03fa..199c35ad 100644
--- a/cmd/subcommand.go
+++ b/internal/cmd/subcommand.go
@@ -8,8 +8,8 @@ import (
 	"slices"
 	"strings"
 
-	"github.com/lets-cli/lets/config/config"
-	"github.com/lets-cli/lets/executor"
+	"github.com/lets-cli/lets/internal/config/config"
+	"github.com/lets-cli/lets/internal/executor"
 	"github.com/spf13/cobra"
 )
 
diff --git a/config/config/checksum.go b/internal/config/config/checksum.go
similarity index 93%
rename from config/config/checksum.go
rename to internal/config/config/checksum.go
index 20c5b7bf..499bb787 100644
--- a/config/config/checksum.go
+++ b/internal/config/config/checksum.go
@@ -1,7 +1,7 @@
 package config
 
 import (
-	"github.com/lets-cli/lets/checksum"
+	"github.com/lets-cli/lets/internal/checksum"
 )
 
 // Checksum type for all checksum uses (env, command.env, command,checksum).
diff --git a/config/config/clone.go b/internal/config/config/clone.go
similarity index 100%
rename from config/config/clone.go
rename to internal/config/config/clone.go
diff --git a/config/config/cmd.go b/internal/config/config/cmd.go
similarity index 100%
rename from config/config/cmd.go
rename to internal/config/config/cmd.go
diff --git a/config/config/cmd_test.go b/internal/config/config/cmd_test.go
similarity index 100%
rename from config/config/cmd_test.go
rename to internal/config/config/cmd_test.go
diff --git a/config/config/command.go b/internal/config/config/command.go
similarity index 99%
rename from config/config/command.go
rename to internal/config/config/command.go
index d5249487..7602945e 100644
--- a/config/config/command.go
+++ b/internal/config/config/command.go
@@ -8,7 +8,7 @@ import (
 	"path/filepath"
 	"strings"
 
-	"github.com/lets-cli/lets/checksum"
+	"github.com/lets-cli/lets/internal/checksum"
 	log "github.com/sirupsen/logrus"
 )
 
diff --git a/config/config/command_test.go b/internal/config/config/command_test.go
similarity index 100%
rename from config/config/command_test.go
rename to internal/config/config/command_test.go
diff --git a/config/config/config.go b/internal/config/config/config.go
similarity index 98%
rename from config/config/config.go
rename to internal/config/config/config.go
index e1453f56..17f15935 100644
--- a/config/config/config.go
+++ b/internal/config/config/config.go
@@ -8,9 +8,9 @@ import (
 	"path/filepath"
 	"strings"
 
-	"github.com/lets-cli/lets/config/path"
-	"github.com/lets-cli/lets/set"
-	"github.com/lets-cli/lets/util"
+	"github.com/lets-cli/lets/internal/config/path"
+	"github.com/lets-cli/lets/internal/set"
+	"github.com/lets-cli/lets/internal/util"
 	"gopkg.in/yaml.v3"
 )
 
diff --git a/config/config/config_test.go b/internal/config/config/config_test.go
similarity index 100%
rename from config/config/config_test.go
rename to internal/config/config/config_test.go
diff --git a/config/config/deps.go b/internal/config/config/deps.go
similarity index 100%
rename from config/config/deps.go
rename to internal/config/config/deps.go
diff --git a/config/config/env.go b/internal/config/config/env.go
similarity index 99%
rename from config/config/env.go
rename to internal/config/config/env.go
index a9dc9e8f..bf2dbf53 100644
--- a/config/config/env.go
+++ b/internal/config/config/env.go
@@ -7,7 +7,7 @@ import (
 	"slices"
 	"strings"
 
-	"github.com/lets-cli/lets/checksum"
+	"github.com/lets-cli/lets/internal/checksum"
 	"gopkg.in/yaml.v3"
 )
 
diff --git a/config/config/mixin.go b/internal/config/config/mixin.go
similarity index 97%
rename from config/config/mixin.go
rename to internal/config/config/mixin.go
index 1a33eed1..097e35b9 100644
--- a/config/config/mixin.go
+++ b/internal/config/config/mixin.go
@@ -13,8 +13,8 @@ import (
 	"strings"
 	"time"
 
-	"github.com/lets-cli/lets/set"
-	"github.com/lets-cli/lets/util"
+	"github.com/lets-cli/lets/internal/set"
+	"github.com/lets-cli/lets/internal/util"
 )
 
 var allowedContentTypes = set.NewSet(
diff --git a/config/config/mixin_test.go b/internal/config/config/mixin_test.go
similarity index 100%
rename from config/config/mixin_test.go
rename to internal/config/config/mixin_test.go
diff --git a/config/config/ref.go b/internal/config/config/ref.go
similarity index 100%
rename from config/config/ref.go
rename to internal/config/config/ref.go
diff --git a/config/config/version.go b/internal/config/config/version.go
similarity index 90%
rename from config/config/version.go
rename to internal/config/config/version.go
index 9662e8eb..de5f2a3a 100644
--- a/config/config/version.go
+++ b/internal/config/config/version.go
@@ -3,7 +3,7 @@ package config
 import (
 	"errors"
 
-	"github.com/lets-cli/lets/util"
+	"github.com/lets-cli/lets/internal/util"
 )
 
 type Version string
diff --git a/config/find.go b/internal/config/find.go
similarity index 93%
rename from config/find.go
rename to internal/config/find.go
index f2c48f8f..e0fcf260 100644
--- a/config/find.go
+++ b/internal/config/find.go
@@ -5,9 +5,9 @@ import (
 	"path/filepath"
 
 	"github.com/fatih/color"
-	"github.com/lets-cli/lets/config/path"
-	"github.com/lets-cli/lets/util"
-	"github.com/lets-cli/lets/workdir"
+	"github.com/lets-cli/lets/internal/config/path"
+	"github.com/lets-cli/lets/internal/util"
+	"github.com/lets-cli/lets/internal/workdir"
 	log "github.com/sirupsen/logrus"
 )
 
diff --git a/config/find_test.go b/internal/config/find_test.go
similarity index 100%
rename from config/find_test.go
rename to internal/config/find_test.go
diff --git a/config/load.go b/internal/config/load.go
similarity index 93%
rename from config/load.go
rename to internal/config/load.go
index 416e4a6f..726551de 100644
--- a/config/load.go
+++ b/internal/config/load.go
@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"os"
 
-	"github.com/lets-cli/lets/config/config"
+	"github.com/lets-cli/lets/internal/config/config"
 	"gopkg.in/yaml.v3"
 )
 
diff --git a/config/load_test.go b/internal/config/load_test.go
similarity index 100%
rename from config/load_test.go
rename to internal/config/load_test.go
diff --git a/config/path/path.go b/internal/config/path/path.go
similarity index 96%
rename from config/path/path.go
rename to internal/config/path/path.go
index b5da163d..c4072b5b 100644
--- a/config/path/path.go
+++ b/internal/config/path/path.go
@@ -5,7 +5,7 @@ import (
 	"fmt"
 	"path/filepath"
 
-	"github.com/lets-cli/lets/util"
+	"github.com/lets-cli/lets/internal/util"
 )
 
 var ErrFileNotExists = errors.New("file not exists")
diff --git a/config/validate.go b/internal/config/validate.go
similarity index 95%
rename from config/validate.go
rename to internal/config/validate.go
index 33c677ec..688712b7 100644
--- a/config/validate.go
+++ b/internal/config/validate.go
@@ -4,8 +4,8 @@ import (
 	"errors"
 	"fmt"
 
-	"github.com/lets-cli/lets/config/config"
-	"github.com/lets-cli/lets/util"
+	"github.com/lets-cli/lets/internal/config/config"
+	"github.com/lets-cli/lets/internal/util"
 )
 
 // Validate loaded config.
diff --git a/config/validate_test.go b/internal/config/validate_test.go
similarity index 97%
rename from config/validate_test.go
rename to internal/config/validate_test.go
index 633faa66..6c32d177 100644
--- a/config/validate_test.go
+++ b/internal/config/validate_test.go
@@ -3,7 +3,7 @@ package config
 import (
 	"testing"
 
-	"github.com/lets-cli/lets/config/config"
+	"github.com/lets-cli/lets/internal/config/config"
 )
 
 func TestValidateCommandInDependsExists(t *testing.T) {
diff --git a/config/workdir.go b/internal/config/workdir.go
similarity index 100%
rename from config/workdir.go
rename to internal/config/workdir.go
diff --git a/docopt/docopts.go b/internal/docopt/docopts.go
similarity index 100%
rename from docopt/docopts.go
rename to internal/docopt/docopts.go
diff --git a/env/env.go b/internal/env/env.go
similarity index 100%
rename from env/env.go
rename to internal/env/env.go
diff --git a/executor/env.go b/internal/executor/env.go
similarity index 97%
rename from executor/env.go
rename to internal/executor/env.go
index 775a468d..f52cd3de 100644
--- a/executor/env.go
+++ b/internal/executor/env.go
@@ -5,7 +5,7 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/lets-cli/lets/checksum"
+	"github.com/lets-cli/lets/internal/checksum"
 )
 
 func makeEnvEntry(k, v string) string {
diff --git a/executor/env_test.go b/internal/executor/env_test.go
similarity index 100%
rename from executor/env_test.go
rename to internal/executor/env_test.go
diff --git a/executor/executor.go b/internal/executor/executor.go
similarity index 97%
rename from executor/executor.go
rename to internal/executor/executor.go
index 8714f65e..277f5fe7 100644
--- a/executor/executor.go
+++ b/internal/executor/executor.go
@@ -10,11 +10,11 @@ import (
 	"path/filepath"
 	"strings"
 
-	"github.com/lets-cli/lets/checksum"
-	"github.com/lets-cli/lets/config/config"
-	"github.com/lets-cli/lets/docopt"
-	"github.com/lets-cli/lets/env"
-	"github.com/lets-cli/lets/logging"
+	"github.com/lets-cli/lets/internal/checksum"
+	"github.com/lets-cli/lets/internal/config/config"
+	"github.com/lets-cli/lets/internal/docopt"
+	"github.com/lets-cli/lets/internal/env"
+	"github.com/lets-cli/lets/internal/logging"
 	"golang.org/x/sync/errgroup"
 )
 
diff --git a/logging/formatter.go b/internal/logging/formatter.go
similarity index 100%
rename from logging/formatter.go
rename to internal/logging/formatter.go
diff --git a/logging/log.go b/internal/logging/log.go
similarity index 100%
rename from logging/log.go
rename to internal/logging/log.go
diff --git a/logging/log_test.go b/internal/logging/log_test.go
similarity index 100%
rename from logging/log_test.go
rename to internal/logging/log_test.go
diff --git a/logging/writerhook.go b/internal/logging/writerhook.go
similarity index 100%
rename from logging/writerhook.go
rename to internal/logging/writerhook.go
diff --git a/lsp/handlers.go b/internal/lsp/handlers.go
similarity index 99%
rename from lsp/handlers.go
rename to internal/lsp/handlers.go
index b13d7e6d..7af9bde5 100644
--- a/lsp/handlers.go
+++ b/internal/lsp/handlers.go
@@ -4,7 +4,7 @@ import (
 	"errors"
 	"slices"
 
-	"github.com/lets-cli/lets/util"
+	"github.com/lets-cli/lets/internal/util"
 	"github.com/tliron/glsp"
 	lsp "github.com/tliron/glsp/protocol_3_16"
 )
diff --git a/lsp/server.go b/internal/lsp/server.go
similarity index 100%
rename from lsp/server.go
rename to internal/lsp/server.go
diff --git a/lsp/storage.go b/internal/lsp/storage.go
similarity index 100%
rename from lsp/storage.go
rename to internal/lsp/storage.go
diff --git a/lsp/treesitter.go b/internal/lsp/treesitter.go
similarity index 100%
rename from lsp/treesitter.go
rename to internal/lsp/treesitter.go
diff --git a/lsp/treesitter_test.go b/internal/lsp/treesitter_test.go
similarity index 100%
rename from lsp/treesitter_test.go
rename to internal/lsp/treesitter_test.go
diff --git a/lsp/utils.go b/internal/lsp/utils.go
similarity index 100%
rename from lsp/utils.go
rename to internal/lsp/utils.go
diff --git a/set/set.go b/internal/set/set.go
similarity index 100%
rename from set/set.go
rename to internal/set/set.go
diff --git a/set/set_test.go b/internal/set/set_test.go
similarity index 100%
rename from set/set_test.go
rename to internal/set/set_test.go
diff --git a/test/args.go b/internal/test/args.go
similarity index 100%
rename from test/args.go
rename to internal/test/args.go
diff --git a/test/temp_file.go b/internal/test/temp_file.go
similarity index 100%
rename from test/temp_file.go
rename to internal/test/temp_file.go
diff --git a/upgrade/registry/registry.go b/internal/upgrade/registry/registry.go
similarity index 100%
rename from upgrade/registry/registry.go
rename to internal/upgrade/registry/registry.go
diff --git a/upgrade/upgrade.go b/internal/upgrade/upgrade.go
similarity index 98%
rename from upgrade/upgrade.go
rename to internal/upgrade/upgrade.go
index 9b2a977a..b0b5319e 100644
--- a/upgrade/upgrade.go
+++ b/internal/upgrade/upgrade.go
@@ -7,7 +7,7 @@ import (
 	"path"
 	"runtime"
 
-	"github.com/lets-cli/lets/upgrade/registry"
+	"github.com/lets-cli/lets/internal/upgrade/registry"
 	log "github.com/sirupsen/logrus"
 )
 
diff --git a/upgrade/upgrade_test.go b/internal/upgrade/upgrade_test.go
similarity index 98%
rename from upgrade/upgrade_test.go
rename to internal/upgrade/upgrade_test.go
index 5147bc96..485db661 100644
--- a/upgrade/upgrade_test.go
+++ b/internal/upgrade/upgrade_test.go
@@ -7,7 +7,7 @@ import (
 	"testing"
 	"time"
 
-	"github.com/lets-cli/lets/upgrade/registry"
+	"github.com/lets-cli/lets/internal/upgrade/registry"
 )
 
 type MockRegistry struct {
diff --git a/util/dir.go b/internal/util/dir.go
similarity index 100%
rename from util/dir.go
rename to internal/util/dir.go
diff --git a/util/file.go b/internal/util/file.go
similarity index 100%
rename from util/file.go
rename to internal/util/file.go
diff --git a/util/version.go b/internal/util/version.go
similarity index 100%
rename from util/version.go
rename to internal/util/version.go
diff --git a/workdir/workdir.go b/internal/workdir/workdir.go
similarity index 100%
rename from workdir/workdir.go
rename to internal/workdir/workdir.go
diff --git a/main.go b/main.go
index c7b1cda5..525429c2 100644
--- a/main.go
+++ b/main.go
@@ -8,14 +8,14 @@ import (
 	"strings"
 	"syscall"
 
-	"github.com/lets-cli/lets/cmd"
-	"github.com/lets-cli/lets/config"
-	"github.com/lets-cli/lets/env"
-	"github.com/lets-cli/lets/logging"
-	"github.com/lets-cli/lets/set"
-	"github.com/lets-cli/lets/upgrade"
-	"github.com/lets-cli/lets/upgrade/registry"
-	"github.com/lets-cli/lets/workdir"
+	"github.com/lets-cli/lets/internal/cmd"
+	"github.com/lets-cli/lets/internal/config"
+	"github.com/lets-cli/lets/internal/env"
+	"github.com/lets-cli/lets/internal/logging"
+	"github.com/lets-cli/lets/internal/set"
+	"github.com/lets-cli/lets/internal/upgrade"
+	"github.com/lets-cli/lets/internal/upgrade/registry"
+	"github.com/lets-cli/lets/internal/workdir"
 	log "github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 )