diff --git a/contrib/demo/node_allocator.go b/contrib/demo/node_allocator.go
index b0cb25b4..2db63de1 100644
--- a/contrib/demo/node_allocator.go
+++ b/contrib/demo/node_allocator.go
@@ -1,3 +1,4 @@
+//go:build jemalloc && allocator
 // +build jemalloc,allocator
 
 package main
@@ -10,7 +11,7 @@ import (
 
 // Defined in node.go.
 func init() {
-	alloc = z.NewAllocator(10 << 20, "demo")
+	alloc = z.NewAllocator(10<<20, "demo")
 }
 
 func newNode(val int) *node {
diff --git a/contrib/memtest/main.go b/contrib/memtest/main.go
index 741d1761..c88734a3 100644
--- a/contrib/memtest/main.go
+++ b/contrib/memtest/main.go
@@ -20,6 +20,7 @@ package main
 import "C"
 import (
 	"fmt"
+	"log"
 	"math/rand"
 	"net/http"
 	_ "net/http/pprof"
@@ -33,7 +34,6 @@ import (
 
 	"github.com/dgraph-io/ristretto/z"
 	"github.com/dustin/go-humanize"
-	"github.com/golang/glog"
 )
 
 type S struct {
@@ -67,7 +67,7 @@ func newS(sz int) *S {
 	s.val = Calloc(sz)
 	copy(s.val, fill)
 	if s.next != nil {
-		glog.Fatalf("news.next must be nil: %p", s.next)
+		log.Fatalf("news.next must be nil: %p", s.next)
 	}
 	return s
 }
@@ -87,7 +87,7 @@ func (s *S) allocateNext(sz int) {
 
 func (s *S) deallocNext() {
 	if s.next == nil {
-		glog.Fatal("next should not be nil")
+		log.Fatal("next should not be nil")
 	}
 	next := s.next
 	s.next = next.next
@@ -161,13 +161,13 @@ func main() {
 	}()
 	go func() {
 		if err := http.ListenAndServe("0.0.0.0:8080", nil); err != nil {
-			glog.Fatalf("Error: %v", err)
+			log.Fatalf("Error: %v", err)
 		}
 	}()
 
 	viaLL()
 	if left := NumAllocBytes(); left != 0 {
-		glog.Fatalf("Unable to deallocate all memory: %v\n", left)
+		log.Fatalf("Unable to deallocate all memory: %v\n", left)
 	}
 	runtime.GC()
 	fmt.Println("Done. Reduced to zero memory usage.")
diff --git a/contrib/memtest/nojemalloc.go b/contrib/memtest/nojemalloc.go
index b46ab931..efef68f7 100644
--- a/contrib/memtest/nojemalloc.go
+++ b/contrib/memtest/nojemalloc.go
@@ -1,15 +1,15 @@
-//+build !jemalloc
+//go:build !jemalloc
+// +build !jemalloc
 
 package main
 
 // #include <stdlib.h>
 import "C"
 import (
+	"log"
 	"reflect"
 	"sync/atomic"
 	"unsafe"
-
-	"github.com/golang/glog"
 )
 
 func Calloc(size int) []byte {
@@ -42,5 +42,5 @@ func NumAllocBytes() int64 { return atomic.LoadInt64(&numbytes) }
 func check() {}
 
 func init() {
-	glog.Infof("USING CALLOC")
+	log.Print("USING CALLOC")
 }
diff --git a/contrib/memtest/withjemalloc.go b/contrib/memtest/withjemalloc.go
index 4ba6ebd1..a417e409 100644
--- a/contrib/memtest/withjemalloc.go
+++ b/contrib/memtest/withjemalloc.go
@@ -1,10 +1,12 @@
-//+build jemalloc
+//go:build jemalloc
+// +build jemalloc
 
 package main
 
 import (
+	"log"
+
 	"github.com/dgraph-io/ristretto/z"
-	"github.com/golang/glog"
 )
 
 func Calloc(size int) []byte { return z.Calloc(size, "memtest") }
@@ -13,7 +15,7 @@ func NumAllocBytes() int64   { return z.NumAllocBytes() }
 
 func check() {
 	if buf := z.CallocNoRef(1, "memtest"); len(buf) == 0 {
-		glog.Fatalf("Not using manual memory management. Compile with jemalloc.")
+		log.Fatalf("Not using manual memory management. Compile with jemalloc.")
 	} else {
 		z.Free(buf)
 	}
@@ -22,5 +24,5 @@ func check() {
 }
 
 func init() {
-	glog.Infof("USING JEMALLOC")
+	log.Infof("USING JEMALLOC")
 }
diff --git a/go.mod b/go.mod
index f7a620c5..eb7b5146 100644
--- a/go.mod
+++ b/go.mod
@@ -4,11 +4,9 @@ go 1.12
 
 require (
 	github.com/cespare/xxhash/v2 v2.1.1
-	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2
 	github.com/dustin/go-humanize v1.0.0
-	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b
 	github.com/pkg/errors v0.9.1
-	github.com/stretchr/testify v1.4.0
+	github.com/stretchr/testify v1.6.1
 	golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f
 )
diff --git a/go.sum b/go.sum
index 6e3d7903..e012bac5 100644
--- a/go.sum
+++ b/go.sum
@@ -1,24 +1,21 @@
 github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=
 github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
-github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2 h1:tdlZCpZ/P9DhczCTSixgIKmwPv6+wP5DGjqLYw5SUiA=
 github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2/go.mod h1:SqUrOPUnsFjfmXRMNPybcSiG0BgUW2AuFH8PAnS2iTw=
 github.com/dustin/go-humanize v1.0.0 h1:VSnTsYCnlFHaM2/igO1h6X3HA71jcobQuxemgkq4zYo=
 github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
-github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58=
-github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
-github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
+github.com/stretchr/testify v1.6.1 h1:hDPOHmpOpP40lSULcqw7IrRb/u7w6RpDC9399XyoNd0=
+github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f h1:+Nyd8tzPX9R7BWHguqsrbFdRx3WQ/1ib8I44HXV5yTA=
 golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
-gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/z/bbloom.go b/z/bbloom.go
index 37135b01..3e2137ff 100644
--- a/z/bbloom.go
+++ b/z/bbloom.go
@@ -23,10 +23,9 @@ package z
 import (
 	"bytes"
 	"encoding/json"
+	"log"
 	"math"
 	"unsafe"
-
-	"github.com/golang/glog"
 )
 
 // helper
@@ -60,7 +59,7 @@ func NewBloomFilter(params ...float64) (bloomfilter *Bloom) {
 			entries, locs = uint64(params[0]), uint64(params[1])
 		}
 	} else {
-		glog.Fatal("usage: New(float64(number_of_entries), float64(number_of_hashlocations))" +
+		log.Fatal("usage: New(float64(number_of_entries), float64(number_of_hashlocations))" +
 			" i.e. New(float64(1000), float64(3)) or New(float64(number_of_entries)," +
 			" float64(number_of_hashlocations)) i.e. New(float64(1000), float64(0.03))")
 	}
@@ -205,7 +204,7 @@ func (bl Bloom) JSONMarshal() []byte {
 	}
 	data, err := json.Marshal(bloomImEx)
 	if err != nil {
-		glog.Fatal("json.Marshal failed: ", err)
+		log.Fatal("json.Marshal failed: ", err)
 	}
 	return data
 }
diff --git a/z/buffer.go b/z/buffer.go
index 5a22de8c..b3a48ed0 100644
--- a/z/buffer.go
+++ b/z/buffer.go
@@ -20,11 +20,11 @@ import (
 	"encoding/binary"
 	"fmt"
 	"io/ioutil"
+	"log"
 	"os"
 	"sort"
 	"sync/atomic"
 
-	"github.com/golang/glog"
 	"github.com/pkg/errors"
 )
 
@@ -346,12 +346,12 @@ func (s *sortHelper) sortSmall(start, end int) {
 
 func assert(b bool) {
 	if !b {
-		glog.Fatalf("%+v", errors.Errorf("Assertion failure"))
+		log.Fatalf("%+v", errors.Errorf("Assertion failure"))
 	}
 }
 func check(err error) {
 	if err != nil {
-		glog.Fatalf("%+v", err)
+		log.Fatalf("%+v", err)
 	}
 }
 func check2(_ interface{}, err error) {
diff --git a/z/calloc_jemalloc.go b/z/calloc_jemalloc.go
index 904d73ac..1199472d 100644
--- a/z/calloc_jemalloc.go
+++ b/z/calloc_jemalloc.go
@@ -2,6 +2,7 @@
 // of this source code is governed by a BSD-style license that can be found in
 // the LICENSE file.
 
+//go:build jemalloc
 // +build jemalloc
 
 package z
@@ -161,7 +162,7 @@ func fetchStat(s string) uint64 {
 		unsafe.Pointer(&out),             // Variable to store the output.
 		(*C.size_t)(unsafe.Pointer(&sz)), // Size of the output variable.
 		nil,                              // Input variable used to set a value.
-		0) // Size of the input variable.
+		0)                                // Size of the input variable.
 	return out
 }
 
diff --git a/z/flags.go b/z/flags.go
index fb6dffb6..a45ffffc 100644
--- a/z/flags.go
+++ b/z/flags.go
@@ -2,6 +2,7 @@ package z
 
 import (
 	"fmt"
+	"log"
 	"os"
 	"os/user"
 	"path/filepath"
@@ -10,7 +11,6 @@ import (
 	"strings"
 	"time"
 
-	"github.com/golang/glog"
 	"github.com/pkg/errors"
 )
 
@@ -109,7 +109,7 @@ type SuperFlag struct {
 func NewSuperFlag(flag string) *SuperFlag {
 	sf, err := newSuperFlagImpl(flag)
 	if err != nil {
-		glog.Fatal(err)
+		log.Fatal(err)
 	}
 	return sf
 }
@@ -136,7 +136,7 @@ func (sf *SuperFlag) String() string {
 func (sf *SuperFlag) MergeAndCheckDefault(flag string) *SuperFlag {
 	sf, err := sf.MergeWithDefault(flag)
 	if err != nil {
-		glog.Fatal(err)
+		log.Fatal(err)
 	}
 	return sf
 }
@@ -207,7 +207,7 @@ func (sf *SuperFlag) GetBool(opt string) bool {
 		err = errors.Wrapf(err,
 			"Unable to parse %s as bool for key: %s. Options: %s\n",
 			val, opt, sf)
-		glog.Fatalf("%+v", err)
+		log.Fatalf("%+v", err)
 	}
 	return b
 }
@@ -222,7 +222,7 @@ func (sf *SuperFlag) GetFloat64(opt string) float64 {
 		err = errors.Wrapf(err,
 			"Unable to parse %s as float64 for key: %s. Options: %s\n",
 			val, opt, sf)
-		glog.Fatalf("%+v", err)
+		log.Fatalf("%+v", err)
 	}
 	return f
 }
@@ -237,7 +237,7 @@ func (sf *SuperFlag) GetInt64(opt string) int64 {
 		err = errors.Wrapf(err,
 			"Unable to parse %s as int64 for key: %s. Options: %s\n",
 			val, opt, sf)
-		glog.Fatalf("%+v", err)
+		log.Fatalf("%+v", err)
 	}
 	return i
 }
@@ -252,7 +252,7 @@ func (sf *SuperFlag) GetUint64(opt string) uint64 {
 		err = errors.Wrapf(err,
 			"Unable to parse %s as uint64 for key: %s. Options: %s\n",
 			val, opt, sf)
-		glog.Fatalf("%+v", err)
+		log.Fatalf("%+v", err)
 	}
 	return u
 }
@@ -267,7 +267,7 @@ func (sf *SuperFlag) GetUint32(opt string) uint32 {
 		err = errors.Wrapf(err,
 			"Unable to parse %s as uint32 for key: %s. Options: %s\n",
 			val, opt, sf)
-		glog.Fatalf("%+v", err)
+		log.Fatalf("%+v", err)
 	}
 	return uint32(u)
 }
@@ -283,7 +283,7 @@ func (sf *SuperFlag) GetPath(opt string) string {
 	p := sf.GetString(opt)
 	path, err := expandPath(p)
 	if err != nil {
-		glog.Fatalf("Failed to get path: %+v", err)
+		log.Fatalf("Failed to get path: %+v", err)
 	}
 	return path
 }
diff --git a/z/simd/search.go b/z/simd/search.go
index b1e63922..f2720616 100644
--- a/z/simd/search.go
+++ b/z/simd/search.go
@@ -1,3 +1,4 @@
+//go:build !amd64
 // +build !amd64
 
 /*
@@ -20,7 +21,7 @@ package simd
 
 // Search uses the Clever search to find the correct key.
 func Search(xs []uint64, k uint64) int16 {
-	if len(xs) < 8 || (len(xs) % 8 != 0) {
+	if len(xs) < 8 || (len(xs)%8 != 0) {
 		return Naive(xs, k)
 	}
 	var twos, pk [4]uint64