diff --git a/consensus/update.go b/consensus/update.go
index 6b5a9c3a..86fc0c1f 100644
--- a/consensus/update.go
+++ b/consensus/update.go
@@ -228,10 +228,10 @@ func adjustTarget(s State, blockTimestamp time.Time, targetTimestamp time.Time)
 	shift *= 10
 	shift /= 10000 * 10000
 	targetBlockTime := blockInterval + shift
-	if min := blockInterval / 3; targetBlockTime < min {
-		targetBlockTime = min
-	} else if max := blockInterval * 3; targetBlockTime > max {
-		targetBlockTime = max
+	if minTime := blockInterval / 3; targetBlockTime < minTime {
+		targetBlockTime = minTime
+	} else if maxTime := blockInterval * 3; targetBlockTime > maxTime {
+		targetBlockTime = maxTime
 	}
 	if oakTotalTime <= 0 {
 		oakTotalTime = 1
@@ -249,12 +249,12 @@ func adjustTarget(s State, blockTimestamp time.Time, targetTimestamp time.Time)
 	if s.childHeight() == s.Network.HardforkASIC.Height {
 		return newTarget
 	}
-	min := mulTargetFrac(s.ChildTarget, 1004, 1000)
-	max := mulTargetFrac(s.ChildTarget, 1000, 1004)
-	if newTarget.CmpWork(min) < 0 {
-		newTarget = min
-	} else if newTarget.CmpWork(max) > 0 {
-		newTarget = max
+	minTarget := mulTargetFrac(s.ChildTarget, 1004, 1000)
+	maxTarget := mulTargetFrac(s.ChildTarget, 1000, 1004)
+	if newTarget.CmpWork(minTarget) < 0 {
+		newTarget = minTarget
+	} else if newTarget.CmpWork(maxTarget) > 0 {
+		newTarget = maxTarget
 	}
 	return newTarget
 }
@@ -280,10 +280,10 @@ func adjustDifficulty(s State, blockTimestamp time.Time, targetTimestamp time.Ti
 
 	// calculate the new target block time, clamped to a factor of 3
 	targetBlockTime := s.BlockInterval() + shift
-	if min := s.BlockInterval() / 3; targetBlockTime < min {
-		targetBlockTime = min
-	} else if max := s.BlockInterval() * 3; targetBlockTime > max {
-		targetBlockTime = max
+	if minTime := s.BlockInterval() / 3; targetBlockTime < minTime {
+		targetBlockTime = minTime
+	} else if maxTime := s.BlockInterval() * 3; targetBlockTime > maxTime {
+		targetBlockTime = maxTime
 	}
 
 	// estimate current hashrate
@@ -301,10 +301,10 @@ func adjustDifficulty(s State, blockTimestamp time.Time, targetTimestamp time.Ti
 
 	// clamp the adjustment to 0.4%
 	maxAdjust := s.Difficulty.div64(250)
-	if min := s.Difficulty.sub(maxAdjust); newDifficulty.Cmp(min) < 0 {
-		newDifficulty = min
-	} else if max := s.Difficulty.add(maxAdjust); newDifficulty.Cmp(max) > 0 {
-		newDifficulty = max
+	if minDifficulty := s.Difficulty.sub(maxAdjust); newDifficulty.Cmp(minDifficulty) < 0 {
+		newDifficulty = minDifficulty
+	} else if maxDifficulty := s.Difficulty.add(maxAdjust); newDifficulty.Cmp(maxDifficulty) > 0 {
+		newDifficulty = maxDifficulty
 	}
 	return newDifficulty, invTarget(newDifficulty.n)
 }
diff --git a/go.mod b/go.mod
index f9cb3428..c5cb82af 100644
--- a/go.mod
+++ b/go.mod
@@ -4,8 +4,8 @@ go 1.20
 
 require (
 	go.sia.tech/mux v1.2.0
-	golang.org/x/crypto v0.22.0
-	golang.org/x/sys v0.19.0
+	golang.org/x/crypto v0.23.0
+	golang.org/x/sys v0.20.0
 	lukechampine.com/frand v1.4.2
 )
 
diff --git a/go.sum b/go.sum
index c59e6d20..ecfaf43a 100644
--- a/go.sum
+++ b/go.sum
@@ -2,10 +2,10 @@ github.com/aead/chacha20 v0.0.0-20180709150244-8b13a72661da h1:KjTM2ks9d14ZYCvmH
 github.com/aead/chacha20 v0.0.0-20180709150244-8b13a72661da/go.mod h1:eHEWzANqSiWQsof+nXEI9bUVUyV6F53Fp89EuCh2EAA=
 go.sia.tech/mux v1.2.0 h1:ofa1Us9mdymBbGMY2XH/lSpY8itFsKIo/Aq8zwe+GHU=
 go.sia.tech/mux v1.2.0/go.mod h1:Yyo6wZelOYTyvrHmJZ6aQfRoer3o4xyKQ4NmQLJrBSo=
-golang.org/x/crypto v0.22.0 h1:g1v0xeRhjcugydODzvb3mEM9SQ0HGp9s/nh3COQ/C30=
-golang.org/x/crypto v0.22.0/go.mod h1:vr6Su+7cTlO45qkww3VDJlzDn0ctJvRgYbC2NvXHt+M=
+golang.org/x/crypto v0.23.0 h1:dIJU/v2J8Mdglj/8rJ6UUOM3Zc9zLZxVZwwxMooUSAI=
+golang.org/x/crypto v0.23.0/go.mod h1:CKFgDieR+mRhux2Lsu27y0fO304Db0wZe70UKqHu0v8=
 golang.org/x/sys v0.0.0-20190626221950-04f50cda93cb/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.19.0 h1:q5f1RH2jigJ1MoAWp2KTp3gm5zAGFUTarQZ5U386+4o=
-golang.org/x/sys v0.19.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.20.0 h1:Od9JTbYCk261bKm4M/mw7AklTlFYIa0bIp9BgSm1S8Y=
+golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 lukechampine.com/frand v1.4.2 h1:RzFIpOvkMXuPMBb9maa4ND4wjBn71E1Jpf8BzJHMaVw=
 lukechampine.com/frand v1.4.2/go.mod h1:4S/TM2ZgrKejMcKMbeLjISpJMO+/eZ1zu3vYX9dtj3s=
diff --git a/rhp/v2/merkle.go b/rhp/v2/merkle.go
index bfdbc46c..b7707f0b 100644
--- a/rhp/v2/merkle.go
+++ b/rhp/v2/merkle.go
@@ -244,9 +244,9 @@ func RangeProofSize(n, start, end uint64) uint64 {
 // not overlap end.
 func nextSubtreeSize(start, end uint64) uint64 {
 	ideal := bits.TrailingZeros64(start)
-	max := bits.Len64(end-start) - 1
-	if ideal > max {
-		return 1 << max
+	maxSize := bits.Len64(end-start) - 1
+	if ideal > maxSize {
+		return 1 << maxSize
 	}
 	return 1 << ideal
 }