diff --git a/go.mod b/go.mod
index b60d1c2..5c72691 100644
--- a/go.mod
+++ b/go.mod
@@ -13,14 +13,14 @@ require (
 	github.com/go-faster/xor v1.0.0
 	github.com/go-zeromq/zmq4 v0.15.0
 	github.com/gorilla/mux v1.8.0
-	github.com/holiman/uint256 v1.2.1
+	github.com/holiman/uint256 v1.2.2
 	github.com/jxskiss/base62 v1.1.0
 	github.com/lib/pq v1.10.7
 	github.com/stretchr/testify v1.8.1
 	github.com/tyler-sommer/stick v1.0.4
 	go.etcd.io/bbolt v1.3.7
 	golang.org/x/crypto v0.7.0
-	golang.org/x/exp v0.0.0-20230315142452-642cacee5cc0
+	golang.org/x/exp v0.0.0-20230321023759-10a507213a29
 	golang.org/x/net v0.8.0
 	lukechampine.com/uint128 v1.3.0
 )
diff --git a/go.sum b/go.sum
index 4f7f31c..f687911 100644
--- a/go.sum
+++ b/go.sum
@@ -28,8 +28,8 @@ github.com/go-zeromq/zmq4 v0.15.0/go.mod h1:sD47DcXifeUFsVTB2ps8ijqTpEuTAlYgfuLo
 github.com/gordonklaus/ineffassign v0.0.0-20210522101830-0589229737b2/go.mod h1:M9mZEtGIsR1oDaZagNPNG9iq9n2HrhZ17dsXk73V3Lw=
 github.com/gorilla/mux v1.8.0 h1:i40aqfkR1h2SlN9hojwV5ZA91wcXFOvkdNIeFDP5koI=
 github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
-github.com/holiman/uint256 v1.2.1 h1:XRtyuda/zw2l+Bq/38n5XUoEF72aSOu/77Thd9pPp2o=
-github.com/holiman/uint256 v1.2.1/go.mod h1:y4ga/t+u+Xwd7CpDgZESaRcWy0I7XMlTMA25ApIH5Jw=
+github.com/holiman/uint256 v1.2.2 h1:TXKcSGc2WaxPD2+bmzAsVthL4+pEN0YwXcL5qED83vk=
+github.com/holiman/uint256 v1.2.2/go.mod h1:SC8Ryt4n+UBbPbIBKaG9zbbDlp4jOru9xFZmPzLUTxw=
 github.com/jxskiss/base62 v1.1.0 h1:A5zbF8v8WXx2xixnAKD2w+abC+sIzYJX+nxmhA6HWFw=
 github.com/jxskiss/base62 v1.1.0/go.mod h1:HhWAlUXvxKThfOlZbcuFzsqwtF5TcqS9ru3y5GfjWAc=
 github.com/kisielk/errcheck v1.6.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI2bnpBCr8=
@@ -62,8 +62,8 @@ golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8U
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.7.0 h1:AvwMYaRytfdeVt3u6mLaxYtErKYjxA2OXjJ1HHq6t3A=
 golang.org/x/crypto v0.7.0/go.mod h1:pYwdfH91IfpZVANVyUOhSIPZaFoJGxTFbZhFTx+dXZU=
-golang.org/x/exp v0.0.0-20230315142452-642cacee5cc0 h1:pVgRXcIictcr+lBQIFeiwuwtDIs4eL21OuM9nyAADmo=
-golang.org/x/exp v0.0.0-20230315142452-642cacee5cc0/go.mod h1:CxIveKay+FTh1D0yPZemJVgC/95VzuuOLq5Qi4xnoYc=
+golang.org/x/exp v0.0.0-20230321023759-10a507213a29 h1:ooxPy7fPvB4kwsA2h+iBNHkAbp/4JxTSwCmvdjEYmug=
+golang.org/x/exp v0.0.0-20230321023759-10a507213a29/go.mod h1:CxIveKay+FTh1D0yPZemJVgC/95VzuuOLq5Qi4xnoYc=
 golang.org/x/lint v0.0.0-20210508222113-6edffad5e616/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
 golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
 golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
diff --git a/types/difficulty.go b/types/difficulty.go
index 26982a3..1567636 100644
--- a/types/difficulty.go
+++ b/types/difficulty.go
@@ -258,6 +258,7 @@ func (d Difficulty) StringNumeric() string {
 	return uint128.Uint128(d).String()
 }
 
+// TODO: remove uint256 dependency as it's unique to this section
 var powBase = uint256.NewInt(0).SetBytes32(bytes.Repeat([]byte{0xff}, 32))
 
 func DifficultyFromPoW(powHash Hash) Difficulty {