diff --git a/appengine/appengine.go b/appengine/appengine.go
index 1f8706e..bb972c1 100644
--- a/appengine/appengine.go
+++ b/appengine/appengine.go
@@ -18,13 +18,14 @@ package main
 
 import (
 	"fmt"
-	"github.com/barakmich/glog"
 	"os"
 	"time"
 
-	"github.com/google/cayley/config"
-	"github.com/google/cayley/db"
-	"github.com/google/cayley/http"
+	"github.com/barakmich/glog"
+
+	"github.com/google/cayley/internal/config"
+	"github.com/google/cayley/internal/db"
+	"github.com/google/cayley/internal/http"
 
 	_ "github.com/google/cayley/graph/gaedatastore"
 	_ "github.com/google/cayley/writer"
diff --git a/cmd/cayley/cayley.go b/cmd/cayley/cayley.go
index 77c6cde..302d9e7 100644
--- a/cmd/cayley/cayley.go
+++ b/cmd/cayley/cayley.go
@@ -25,11 +25,11 @@ import (
 
 	"github.com/barakmich/glog"
 
-	"github.com/google/cayley/config"
-	"github.com/google/cayley/db"
 	"github.com/google/cayley/graph"
-	"github.com/google/cayley/http"
 	"github.com/google/cayley/internal"
+	"github.com/google/cayley/internal/config"
+	"github.com/google/cayley/internal/db"
+	"github.com/google/cayley/internal/http"
 
 	// Load all supported backends.
 	_ "github.com/google/cayley/graph/bolt"
diff --git a/integration/integration_test.go b/integration/integration_test.go
index c6a39ed..4b5b726 100644
--- a/integration/integration_test.go
+++ b/integration/integration_test.go
@@ -25,10 +25,10 @@ import (
 	"testing"
 	"time"
 
-	"github.com/google/cayley/config"
-	"github.com/google/cayley/db"
 	"github.com/google/cayley/graph"
 	"github.com/google/cayley/internal"
+	"github.com/google/cayley/internal/config"
+	"github.com/google/cayley/internal/db"
 	"github.com/google/cayley/quad"
 	"github.com/google/cayley/query/gremlin"
 
diff --git a/config/config.go b/internal/config/config.go
similarity index 100%
rename from config/config.go
rename to internal/config/config.go
diff --git a/db/db.go b/internal/db/db.go
similarity index 98%
rename from db/db.go
rename to internal/db/db.go
index a01429e..c139b1e 100644
--- a/db/db.go
+++ b/internal/db/db.go
@@ -21,8 +21,8 @@ import (
 
 	"github.com/barakmich/glog"
 
-	"github.com/google/cayley/config"
 	"github.com/google/cayley/graph"
+	"github.com/google/cayley/internal/config"
 	"github.com/google/cayley/quad"
 )
 
diff --git a/db/repl.go b/internal/db/repl.go
similarity index 99%
rename from db/repl.go
rename to internal/db/repl.go
index 9af2a6f..20ec017 100644
--- a/db/repl.go
+++ b/internal/db/repl.go
@@ -25,8 +25,8 @@ import (
 
 	"github.com/peterh/liner"
 
-	"github.com/google/cayley/config"
 	"github.com/google/cayley/graph"
+	"github.com/google/cayley/internal/config"
 	"github.com/google/cayley/quad/cquads"
 	"github.com/google/cayley/query"
 	"github.com/google/cayley/query/gremlin"
diff --git a/db/repl_test.go b/internal/db/repl_test.go
similarity index 100%
rename from db/repl_test.go
rename to internal/db/repl_test.go
diff --git a/http/docs.go b/internal/http/docs.go
similarity index 100%
rename from http/docs.go
rename to internal/http/docs.go
diff --git a/http/http.go b/internal/http/http.go
similarity index 98%
rename from http/http.go
rename to internal/http/http.go
index abe2e27..90691b1 100644
--- a/http/http.go
+++ b/internal/http/http.go
@@ -25,9 +25,9 @@ import (
 	"github.com/barakmich/glog"
 	"github.com/julienschmidt/httprouter"
 
-	"github.com/google/cayley/config"
-	"github.com/google/cayley/db"
 	"github.com/google/cayley/graph"
+	"github.com/google/cayley/internal/config"
+	"github.com/google/cayley/internal/db"
 )
 
 type ResponseHandler func(http.ResponseWriter, *http.Request, httprouter.Params) int
diff --git a/http/http_test.go b/internal/http/http_test.go
similarity index 100%
rename from http/http_test.go
rename to internal/http/http_test.go
diff --git a/http/query.go b/internal/http/query.go
similarity index 100%
rename from http/query.go
rename to internal/http/query.go
diff --git a/http/write.go b/internal/http/write.go
similarity index 100%
rename from http/write.go
rename to internal/http/write.go
diff --git a/internal/load.go b/internal/load.go
index 57b46da..eb5020a 100644
--- a/internal/load.go
+++ b/internal/load.go
@@ -8,9 +8,9 @@ import (
 	"os"
 	"path/filepath"
 
-	"github.com/google/cayley/config"
-	"github.com/google/cayley/db"
 	"github.com/google/cayley/graph"
+	"github.com/google/cayley/internal/config"
+	"github.com/google/cayley/internal/db"
 	"github.com/google/cayley/quad"
 	"github.com/google/cayley/quad/cquads"
 	"github.com/google/cayley/quad/nquads"