diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 2a084a3..a1f5f65 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -3,11 +3,11 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-go@v2
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v4
         with:
-          go-version: '1.20'
-      - uses: aviate-labs/setup-dfx@v0.2.3
+          go-version: '1.21.0'
+      - uses: aviate-labs/setup-dfx@v0.2.6
         with:
-          dfx-version: 0.13.1
+          dfx-version: 0.15.1
       - run: make test
diff --git a/candid/idl/tdt.go b/candid/idl/tdt.go
index 965457d..441bbc9 100644
--- a/candid/idl/tdt.go
+++ b/candid/idl/tdt.go
@@ -1,7 +1,7 @@
 package idl
 
 import (
-	"golang.org/x/exp/slices"
+	"slices"
 )
 
 type TypeDefinitionTable struct {
diff --git a/certificate/certificate.go b/certificate/certificate.go
index 6812743..b95805b 100644
--- a/certificate/certificate.go
+++ b/certificate/certificate.go
@@ -5,7 +5,7 @@ import (
 	"github.com/aviate-labs/agent-go/certificate/bls"
 	"github.com/aviate-labs/agent-go/principal"
 	"github.com/fxamacker/cbor/v2"
-	"golang.org/x/exp/slices"
+	"slices"
 )
 
 // Cert is a certificate gets returned by the IC.
diff --git a/go.mod b/go.mod
index e1c0423..c64ff17 100644
--- a/go.mod
+++ b/go.mod
@@ -1,14 +1,13 @@
 module github.com/aviate-labs/agent-go
 
-go 1.20
+go 1.21.0
 
 require (
 	github.com/aviate-labs/leb128 v0.3.0
 	github.com/aviate-labs/secp256k1 v0.0.0-5e6736a
 	github.com/di-wu/parser v0.3.0
-	github.com/fxamacker/cbor/v2 v2.4.0
-	github.com/herumi/bls-go-binary v1.28.2
-	golang.org/x/exp v0.0.0-20230515195305-f3d0a9c9a5cc
+	github.com/fxamacker/cbor/v2 v2.5.0
+	github.com/herumi/bls-go-binary v1.32.0
 )
 
 require github.com/x448/float16 v0.8.4 // indirect
diff --git a/go.sum b/go.sum
index ce40b82..a94b23b 100644
--- a/go.sum
+++ b/go.sum
@@ -4,11 +4,9 @@ github.com/aviate-labs/secp256k1 v0.0.0-5e6736a h1:aQkG/D+l8Y7tr809l8pN+KebH2jza
 github.com/aviate-labs/secp256k1 v0.0.0-5e6736a/go.mod h1:C/lr3F9TimrVkdZckG5mz+VU0TrmpeyVKUjzv2YyGwA=
 github.com/di-wu/parser v0.3.0 h1:NMOvy5ifswgt4gsdhySVcKOQtvjC43cHZIfViWctqQY=
 github.com/di-wu/parser v0.3.0/go.mod h1:SLp58pW6WamdmznrVRrw2NTyn4wAvT9rrEFynKX7nYo=
-github.com/fxamacker/cbor/v2 v2.4.0 h1:ri0ArlOR+5XunOP8CRUowT0pSJOwhW098ZCUyskZD88=
-github.com/fxamacker/cbor/v2 v2.4.0/go.mod h1:TA1xS00nchWmaBnEIxPSE5oHLuJBAVvqrtAnWBwBCVo=
-github.com/herumi/bls-go-binary v1.28.2 h1:F0AezsC0M1a9aZjk7g0l2hMb1F56Xtpfku97pDndNZE=
-github.com/herumi/bls-go-binary v1.28.2/go.mod h1:O4Vp1AfR4raRGwFeQpr9X/PQtncEicMoOe6BQt1oX0Y=
+github.com/fxamacker/cbor/v2 v2.5.0 h1:oHsG0V/Q6E/wqTS2O1Cozzsy69nqCiguo5Q1a1ADivE=
+github.com/fxamacker/cbor/v2 v2.5.0/go.mod h1:TA1xS00nchWmaBnEIxPSE5oHLuJBAVvqrtAnWBwBCVo=
+github.com/herumi/bls-go-binary v1.32.0 h1:QX0+mmrCyBNpaVwYahl85yWnxYKDPpNAPIZWOIpP+eU=
+github.com/herumi/bls-go-binary v1.32.0/go.mod h1:O4Vp1AfR4raRGwFeQpr9X/PQtncEicMoOe6BQt1oX0Y=
 github.com/x448/float16 v0.8.4 h1:qLwI1I70+NjRFUR3zs1JPUCgaCXSh3SW62uAKT1mSBM=
 github.com/x448/float16 v0.8.4/go.mod h1:14CWIYCyZA/cWjXOioeEpHeN/83MdbZDRQHoFcYsOfg=
-golang.org/x/exp v0.0.0-20230515195305-f3d0a9c9a5cc h1:mCRnTeVUjcrhlRmO0VK8a6k6Rrf6TF9htwo2pJVSjIU=
-golang.org/x/exp v0.0.0-20230515195305-f3d0a9c9a5cc/go.mod h1:V1LtkGg67GoY2N1AnLN78QLrzxkLyJw7RJb1gzOOz9w=
diff --git a/identity/secp256k1.go b/identity/secp256k1.go
index 159e349..55a6e63 100644
--- a/identity/secp256k1.go
+++ b/identity/secp256k1.go
@@ -9,7 +9,7 @@ import (
 	"fmt"
 	"github.com/aviate-labs/agent-go/principal"
 	"github.com/aviate-labs/secp256k1"
-	"golang.org/x/exp/slices"
+	"slices"
 )
 
 var secp256k1OID = asn1.ObjectIdentifier{1, 3, 132, 0, 10}