diff --git a/plonky2_verifier/gate.go b/plonky2_verifier/gate.go
index 49f2dd7..bbaeed1 100644
--- a/plonky2_verifier/gate.go
+++ b/plonky2_verifier/gate.go
@@ -9,7 +9,7 @@ type gate interface {
 }
 
 func (p *PlonkChip) computeFilter(
-	row int,
+	row uint64,
 	groupRange Range,
 	s QuadraticExtension,
 	manySelector bool,
@@ -33,10 +33,10 @@ func (p *PlonkChip) computeFilter(
 func (p *PlonkChip) evalFiltered(
 	g gate,
 	vars EvaluationVars,
-	row int,
-	selectorIndex int,
+	row uint64,
+	selectorIndex uint64,
 	groupRange Range,
-	numSelectors int,
+	numSelectors uint64,
 ) []QuadraticExtension {
 	filter := p.computeFilter(row, groupRange, vars.localConstants[selectorIndex], numSelectors > 1)
 
diff --git a/plonky2_verifier/plonk.go b/plonky2_verifier/plonk.go
index 72d4ad4..175cfd8 100644
--- a/plonky2_verifier/plonk.go
+++ b/plonky2_verifier/plonk.go
@@ -136,8 +136,8 @@ func (p *PlonkChip) evaluateGateConstraints(
 		gateConstraints := p.evalFiltered(
 			gate,
 			vars,
-			i,
-			int(selectorIndex),
+			uint64(i),
+			selectorIndex,
 			commonData.SelectorsInfo.groups[selectorIndex],
 			commonData.SelectorsInfo.NumSelectors(),
 		)
diff --git a/plonky2_verifier/public_input.go b/plonky2_verifier/public_input.go
index 64256e6..a96df1e 100644
--- a/plonky2_verifier/public_input.go
+++ b/plonky2_verifier/public_input.go
@@ -7,8 +7,8 @@ import (
 type PublicInputGate struct {
 }
 
-func (p *PublicInputGate) WiresPublicInputsHash() []int {
-	return []int{0, 1, 2, 3}
+func (p *PublicInputGate) WiresPublicInputsHash() []uint64 {
+	return []uint64{0, 1, 2, 3}
 }
 
 func (p *PublicInputGate) EvalUnfiltered(pc *PlonkChip, vars EvaluationVars) []QuadraticExtension {
diff --git a/plonky2_verifier/selectors.go b/plonky2_verifier/selectors.go
index a29e750..3626965 100644
--- a/plonky2_verifier/selectors.go
+++ b/plonky2_verifier/selectors.go
@@ -12,6 +12,6 @@ type SelectorsInfo struct {
 	groups          []Range
 }
 
-func (s *SelectorsInfo) NumSelectors() int {
-	return len(s.groups)
+func (s *SelectorsInfo) NumSelectors() uint64 {
+	return uint64(len(s.groups))
 }
diff --git a/plonky2_verifier/vars.go b/plonky2_verifier/vars.go
index 8f04a2d..2a77e65 100644
--- a/plonky2_verifier/vars.go
+++ b/plonky2_verifier/vars.go
@@ -14,6 +14,6 @@ type EvaluationVars struct {
 	publicInputsHash HashOut
 }
 
-func (e *EvaluationVars) RemovePrefix(numSelectors int) {
+func (e *EvaluationVars) RemovePrefix(numSelectors uint64) {
 	e.localConstants = e.localConstants[numSelectors:]
 }