diff --git a/go.mod b/go.mod
index fbe04d4..64968e5 100644
--- a/go.mod
+++ b/go.mod
@@ -3,12 +3,12 @@ module github.com/s0rg/decompose
 go 1.22
 
 require (
-	github.com/docker/docker v25.0.4+incompatible
+	github.com/docker/docker v25.0.5+incompatible
 	github.com/emicklei/dot v1.6.1
 	github.com/expr-lang/expr v1.16.1
 	github.com/prometheus/procfs v0.13.0
 	github.com/s0rg/set v1.2.0
-	github.com/s0rg/trie v1.3.0
+	github.com/s0rg/trie v1.3.1
 	gopkg.in/yaml.v3 v3.0.1
 )
 
diff --git a/go.sum b/go.sum
index fcf5158..69c9db5 100644
--- a/go.sum
+++ b/go.sum
@@ -11,8 +11,8 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/distribution/reference v0.5.0 h1:/FUIFXtfc/x2gpa5/VGfiGLuOIdYa1t65IKK2OFGvA0=
 github.com/distribution/reference v0.5.0/go.mod h1:BbU0aIcezP1/5jX/8MP0YiH4SdvB5Y4f/wlDRiLyi3E=
-github.com/docker/docker v25.0.4+incompatible h1:XITZTrq+52tZyZxUOtFIahUf3aH367FLxJzt9vZeAF8=
-github.com/docker/docker v25.0.4+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
+github.com/docker/docker v25.0.5+incompatible h1:UmQydMduGkrD5nQde1mecF/YnSbTOaPeFIeP5C4W+DE=
+github.com/docker/docker v25.0.5+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
 github.com/docker/go-connections v0.5.0 h1:USnMq7hx7gwdVZq1L49hLXaFtUdTADjXGp+uj1Br63c=
 github.com/docker/go-connections v0.5.0/go.mod h1:ov60Kzw0kKElRwhNs9UlUHAE/F9Fe6GLaXnqyDdmEXc=
 github.com/docker/go-units v0.5.0 h1:69rxXcBk27SvSaaxTtLh/8llcHD8vYHT7WSdRZ/jvr4=
@@ -64,8 +64,8 @@ github.com/rogpeppe/go-internal v1.6.1 h1:/FiVV8dS/e+YqF2JvO3yXRFbBLTIuSDkuC7aBO
 github.com/rogpeppe/go-internal v1.6.1/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTEfhy4qGm1nDQc=
 github.com/s0rg/set v1.2.0 h1:53b207YMktNQJXYei/oHuTR5oOO2e9+eieZOncYsh9g=
 github.com/s0rg/set v1.2.0/go.mod h1:xz3nDbjF4nyMLvAHvmE7rigXpNrKKTsi6iANznIB1/4=
-github.com/s0rg/trie v1.3.0 h1:VeMjAJdVvAMt06QlrLJs9B7tplwyxGtCPPZHfvW4Duo=
-github.com/s0rg/trie v1.3.0/go.mod h1:P+hJUWvPu/imKrsdzOrVswr8Mme6GgFtZfBKojYYkfk=
+github.com/s0rg/trie v1.3.1 h1:O9THfLSiXqBN08gJoHegwdkkaGIIs3GnXlYQswfXWTk=
+github.com/s0rg/trie v1.3.1/go.mod h1:BGS9ZEqxUvxDT+4qai+YZnzvUDvTpJrx8zBtP7LBjS8=
 github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ=
 github.com/sirupsen/logrus v1.9.3/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
 github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
diff --git a/internal/graph/compress.go b/internal/graph/compress.go
index ea768f2..ca13289 100644
--- a/internal/graph/compress.go
+++ b/internal/graph/compress.go
@@ -8,9 +8,10 @@ import (
 	"slices"
 	"strings"
 
-	"github.com/s0rg/decompose/internal/node"
 	"github.com/s0rg/set"
 	"github.com/s0rg/trie"
+
+	"github.com/s0rg/decompose/internal/node"
 )
 
 const (
@@ -83,8 +84,11 @@ func (c *Compressor) Write(w io.Writer) (err error) {
 }
 
 func (c *Compressor) buildGroups() (index map[string]string, err error) {
-	seen := make(set.Unordered[string])
+	index = make(map[string]string)
+	groups := make(map[string][]string)
+
 	t := trie.New[string]()
+	seen := make(set.Unordered[string])
 
 	for _, node := range c.nodes {
 		seen.Add(node.ID)
@@ -97,8 +101,6 @@ func (c *Compressor) buildGroups() (index map[string]string, err error) {
 	}
 
 	comm := t.Common("", defaultDiff)
-	groups := make(map[string][]string)
-	index = make(map[string]string)
 
 	for _, key := range comm {
 		nodes := []string{}