diff --git a/http.go b/http.go
index adf9bb1..b9064a1 100644
--- a/http.go
+++ b/http.go
@@ -2,6 +2,7 @@ package doh
 
 import (
 	"bytes"
+	"context"
 	"fmt"
 	"io/ioutil"
 	"net/http"
@@ -11,11 +12,11 @@ import (
 // request as described in RFC 8484, and returns the response's body.
 // Returns an error if there was an issue sending the request or reading the
 // response body.
-func (r *Resolver) exchangeHTTPS(q []byte) (a []byte, err error) {
+func (r *Resolver) exchangeHTTPS(ctx context.Context, q []byte) (a []byte, err error) {
 	url := fmt.Sprintf("https://%s/dns-query", r.Host)
 	body := bytes.NewBuffer(q)
 
-	req, err := http.NewRequest("POST", url, body)
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, body)
 	if err != nil {
 		return
 	}
diff --git a/resolver.go b/resolver.go
index 0a5d85f..f3535e6 100644
--- a/resolver.go
+++ b/resolver.go
@@ -1,7 +1,10 @@
 // Package doh implements client operations for DoH (DNS over HTTPS) lookups.
 package doh
 
-import "net/http"
+import (
+	"context"
+	"net/http"
+)
 
 // Resolver handles lookups.
 type Resolver struct {
@@ -17,9 +20,9 @@ type Resolver struct {
 // lookup encodes a DNS query, sends it over HTTPS then parses the response.
 // Returns an error if something went wrong at the network level, or when
 // parsing the response headers.
-func (r *Resolver) lookup(fqdn string, t DNSType, c DNSClass) ([]answer, error) {
+func (r *Resolver) lookup(ctx context.Context, fqdn string, t DNSType, c DNSClass) ([]answer, error) {
 	q := encodeQuery(fqdn, t, c)
-	res, err := r.exchangeHTTPS(q)
+	res, err := r.exchangeHTTPS(ctx, q)
 	if err != nil {
 		return nil, err
 	}
@@ -31,12 +34,16 @@ func (r *Resolver) lookup(fqdn string, t DNSType, c DNSClass) ([]answer, error)
 // Returns an error if something went wrong at the network level, or when
 // parsing the response headers, or if the resolver's class isn't IN.
 func (r *Resolver) LookupA(fqdn string) (recs []*ARecord, ttls []uint32, err error) {
+	return r.LookupAContext(context.Background(), fqdn)
+}
+
+func (r *Resolver) LookupAContext(ctx context.Context, fqdn string) (recs []*ARecord, ttls []uint32, err error) {
 	if r.Class != IN && r.Class != ANYCLASS {
 		err = ErrNotIN
 		return
 	}
 
-	answers, err := r.lookup(fqdn, A, IN)
+	answers, err := r.lookup(ctx, fqdn, A, IN)
 	if err != nil {
 		return
 	}
@@ -59,12 +66,16 @@ func (r *Resolver) LookupA(fqdn string) (recs []*ARecord, ttls []uint32, err err
 // Returns an error if something went wrong at the network level, or when
 // parsing the response headers, or if the resolver's class isn't IN.
 func (r *Resolver) LookupAAAA(fqdn string) (recs []*AAAARecord, ttls []uint32, err error) {
+	return r.LookupAAAAContext(context.Background(), fqdn)
+}
+
+func (r *Resolver) LookupAAAAContext(ctx context.Context, fqdn string) (recs []*AAAARecord, ttls []uint32, err error) {
 	if r.Class != IN && r.Class != ANYCLASS {
 		err = ErrNotIN
 		return
 	}
 
-	answers, err := r.lookup(fqdn, AAAA, IN)
+	answers, err := r.lookup(ctx, fqdn, AAAA, IN)
 	if err != nil {
 		return
 	}
@@ -87,7 +98,11 @@ func (r *Resolver) LookupAAAA(fqdn string) (recs []*AAAARecord, ttls []uint32, e
 // Returns an error if something went wrong at the network level, or when
 // parsing the response headers.
 func (r *Resolver) LookupCNAME(fqdn string) (recs []*CNAMERecord, ttls []uint32, err error) {
-	answers, err := r.lookup(fqdn, CNAME, IN)
+	return r.LookupCNAMEContext(context.Background(), fqdn)
+}
+
+func (r *Resolver) LookupCNAMEContext(ctx context.Context, fqdn string) (recs []*CNAMERecord, ttls []uint32, err error) {
+	answers, err := r.lookup(ctx, fqdn, CNAME, IN)
 	if err != nil {
 		return
 	}
@@ -110,7 +125,11 @@ func (r *Resolver) LookupCNAME(fqdn string) (recs []*CNAMERecord, ttls []uint32,
 // Returns an error if something went wrong at the network level, or when
 // parsing the response headers.
 func (r *Resolver) LookupMX(fqdn string) (recs []*MXRecord, ttls []uint32, err error) {
-	answers, err := r.lookup(fqdn, MX, IN)
+	return r.LookupMXContext(context.Background(), fqdn)
+}
+
+func (r *Resolver) LookupMXContext(ctx context.Context, fqdn string) (recs []*MXRecord, ttls []uint32, err error) {
+	answers, err := r.lookup(ctx, fqdn, MX, IN)
 	if err != nil {
 		return
 	}
@@ -133,7 +152,11 @@ func (r *Resolver) LookupMX(fqdn string) (recs []*MXRecord, ttls []uint32, err e
 // Returns an error if something went wrong at the network level, or when
 // parsing the response headers.
 func (r *Resolver) LookupNS(fqdn string) (recs []*NSRecord, ttls []uint32, err error) {
-	answers, err := r.lookup(fqdn, NS, IN)
+	return r.LookupNSContext(context.Background(), fqdn)
+}
+
+func (r *Resolver) LookupNSContext(ctx context.Context, fqdn string) (recs []*NSRecord, ttls []uint32, err error) {
+	answers, err := r.lookup(ctx, fqdn, NS, IN)
 	if err != nil {
 		return
 	}
@@ -156,7 +179,11 @@ func (r *Resolver) LookupNS(fqdn string) (recs []*NSRecord, ttls []uint32, err e
 // Returns an error if something went wrong at the network level, or when
 // parsing the response headers.
 func (r *Resolver) LookupTXT(fqdn string) (recs []*TXTRecord, ttls []uint32, err error) {
-	answers, err := r.lookup(fqdn, TXT, IN)
+	return r.LookupTXTContext(context.Background(), fqdn)
+}
+
+func (r *Resolver) LookupTXTContext(ctx context.Context, fqdn string) (recs []*TXTRecord, ttls []uint32, err error) {
+	answers, err := r.lookup(ctx, fqdn, TXT, IN)
 	if err != nil {
 		return
 	}
@@ -179,7 +206,11 @@ func (r *Resolver) LookupTXT(fqdn string) (recs []*TXTRecord, ttls []uint32, err
 // Returns an error if something went wrong at the network level, or when
 // parsing the response headers.
 func (r *Resolver) LookupSRV(fqdn string) (recs []*SRVRecord, ttls []uint32, err error) {
-	answers, err := r.lookup(fqdn, SRV, IN)
+	return r.LookupSRVContext(context.Background(), fqdn)
+}
+
+func (r *Resolver) LookupSRVContext(ctx context.Context, fqdn string) (recs []*SRVRecord, ttls []uint32, err error) {
+	answers, err := r.lookup(ctx, fqdn, SRV, IN)
 	if err != nil {
 		return
 	}
@@ -205,7 +236,11 @@ func (r *Resolver) LookupSRV(fqdn string) (recs []*SRVRecord, ttls []uint32, err
 // Returns an error if something went wrong at the network level, or when
 // parsing the response headers.
 func (r *Resolver) LookupService(service, network, domain string) (recs []*SRVRecord, ttls []uint32, err error) {
-	return r.LookupSRV("_" + service + "._" + network + "." + domain)
+	return r.LookupServiceContext(context.Background(), service, network, domain)
+}
+
+func (r *Resolver) LookupServiceContext(ctx context.Context, service, network, domain string) (recs []*SRVRecord, ttls []uint32, err error) {
+	return r.LookupSRVContext(ctx, "_"+service+"._"+network+"."+domain)
 }
 
 // LookupSOA performs a DoH lookup on SOA records for the given FQDN.
@@ -213,7 +248,11 @@ func (r *Resolver) LookupService(service, network, domain string) (recs []*SRVRe
 // Returns an error if something went wrong at the network level, or when
 // parsing the response headers.
 func (r *Resolver) LookupSOA(fqdn string) (recs []*SOARecord, ttls []uint32, err error) {
-	answers, err := r.lookup(fqdn, SOA, IN)
+	return r.LookupSOAContext(context.Background(), fqdn)
+}
+
+func (r *Resolver) LookupSOAContext(ctx context.Context, fqdn string) (recs []*SOARecord, ttls []uint32, err error) {
+	answers, err := r.lookup(ctx, fqdn, SOA, IN)
 	if err != nil {
 		return
 	}
@@ -236,7 +275,11 @@ func (r *Resolver) LookupSOA(fqdn string) (recs []*SOARecord, ttls []uint32, err
 // Returns an error if something went wrong at the network level, or when
 // parsing the response headers.
 func (r *Resolver) LookupPTR(fqdn string) (recs []*PTRRecord, ttls []uint32, err error) {
-	answers, err := r.lookup(fqdn, PTR, IN)
+	return r.LookupPTRContext(context.Background(), fqdn)
+}
+
+func (r *Resolver) LookupPTRContext(ctx context.Context, fqdn string) (recs []*PTRRecord, ttls []uint32, err error) {
+	answers, err := r.lookup(ctx, fqdn, PTR, IN)
 	if err != nil {
 		return
 	}