diff --git a/go.mod b/go.mod
index 96fae07a4033..b3c00cf22411 100644
--- a/go.mod
+++ b/go.mod
@@ -94,7 +94,7 @@ require (
 	github.com/multiformats/go-multiaddr v0.3.1
 	github.com/multiformats/go-multiaddr-dns v0.2.0
 	github.com/multiformats/go-multibase v0.0.3
-	github.com/multiformats/go-multicodec v0.2.1-0.20210718225951-a237c4436b76
+	github.com/multiformats/go-multicodec v0.2.1-0.20210723011827-52a3ac546597
 	github.com/multiformats/go-multihash v0.0.15
 	github.com/opentracing/opentracing-go v1.2.0
 	github.com/pkg/errors v0.9.1
diff --git a/go.sum b/go.sum
index 5b8c2ff683eb..3e3e9fef6e4a 100644
--- a/go.sum
+++ b/go.sum
@@ -942,8 +942,8 @@ github.com/multiformats/go-multiaddr-net v0.2.0/go.mod h1:gGdH3UXny6U3cKKYCvpXI5
 github.com/multiformats/go-multibase v0.0.1/go.mod h1:bja2MqRZ3ggyXtZSEDKpl0uO/gviWFaSteVbWT51qgs=
 github.com/multiformats/go-multibase v0.0.3 h1:l/B6bJDQjvQ5G52jw4QGSYeOTZoAwIO77RblWplfIqk=
 github.com/multiformats/go-multibase v0.0.3/go.mod h1:5+1R4eQrT3PkYZ24C3W2Ue2tPwIdYQD509ZjSb5y9Oc=
-github.com/multiformats/go-multicodec v0.2.1-0.20210718225951-a237c4436b76 h1:VD/M8CCDR5uOoNpeCSejcHp3MY7XaQYqLr3ANrDDRxQ=
-github.com/multiformats/go-multicodec v0.2.1-0.20210718225951-a237c4436b76/go.mod h1:qGGaQmioCDh+TeFOnxrbU0DaIPw8yFgAZgFG0V7p1qQ=
+github.com/multiformats/go-multicodec v0.2.1-0.20210723011827-52a3ac546597 h1:ULcqjrvbMRf7TiRiXlmXprupBxpeUkL8q2N8Xq+bNi4=
+github.com/multiformats/go-multicodec v0.2.1-0.20210723011827-52a3ac546597/go.mod h1:qGGaQmioCDh+TeFOnxrbU0DaIPw8yFgAZgFG0V7p1qQ=
 github.com/multiformats/go-multihash v0.0.1/go.mod h1:w/5tugSrLEbWqlcgJabL3oHFKTwfvkofsjW2Qa1ct4U=
 github.com/multiformats/go-multihash v0.0.5/go.mod h1:lt/HCbqlQwlPBz7lv0sQCdtfcMtlJvakRUn/0Ual8po=
 github.com/multiformats/go-multihash v0.0.8/go.mod h1:YSLudS+Pi8NHE7o6tb3D8vrpKa63epEDmG8nTduyAew=
diff --git a/plugin/plugins/git/git.go b/plugin/plugins/git/git.go
index 5799017fa006..e1d38e5b7d09 100644
--- a/plugin/plugins/git/git.go
+++ b/plugin/plugins/git/git.go
@@ -33,7 +33,7 @@ func (*gitPlugin) Version() string {
 func (*gitPlugin) Init(_ *plugin.Environment) error {
 	// register a custom identifier in the reserved range for import of "zlib-encoded git objects."
 	// TODO: give this a name.
-	multicodec.RegisterDecoder(uint64(0x300000+mc.GitRaw), decodeZlibGit)
+	multicodec.RegisterDecoder(uint64(mc.ReservedStart+mc.GitRaw), decodeZlibGit)
 	return nil
 }