diff --git a/go.mod b/go.mod
index 3c5a34f..2873f87 100644
--- a/go.mod
+++ b/go.mod
@@ -3,6 +3,6 @@ module go.lsp.dev/uri
 go 1.13
 
 require (
-	github.com/google/go-cmp v0.3.2-0.20190829225427-b1c9c4891a65
-	golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7
+	github.com/google/go-cmp v0.4.0
+	golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543
 )
diff --git a/go.sum b/go.sum
index 3cb9606..7a664be 100644
--- a/go.sum
+++ b/go.sum
@@ -1,4 +1,4 @@
-github.com/google/go-cmp v0.3.2-0.20190829225427-b1c9c4891a65 h1:B3yqxlLHBEoav+FDQM8ph7IIRA6AhQ70w119k3hoT2Y=
-github.com/google/go-cmp v0.3.2-0.20190829225427-b1c9c4891a65/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
-golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7 h1:9zdDQZ7Thm29KFXgAX/+yaf3eVbP7djjWp/dXAppNCc=
-golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+github.com/google/go-cmp v0.4.0 h1:xsAVV57WRhGj6kEIi8ReJzQlHHqcBYCElAvkovg3B/4=
+github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=