diff --git a/cert/cert.go b/cert/cert.go
index 87af6d9f0..277f531f0 100644
--- a/cert/cert.go
+++ b/cert/cert.go
@@ -1,6 +1,6 @@
 // Copyright 2012, 2013 Canonical Ltd.
 // Copyright 2016 Cloudbase solutions
-// Licensed under the AGPLv3, see LICENCE file for details.
+// Licensed under the LGPLv3, see LICENCE file for details.
 
 package cert
 
diff --git a/cert/cert_test.go b/cert/cert_test.go
index 218af8cc1..4881737c8 100644
--- a/cert/cert_test.go
+++ b/cert/cert_test.go
@@ -1,6 +1,6 @@
 // Copyright 2012, 2013 Canonical Ltd.
 // Copyright 2016 Cloudbase solutions
-// Licensed under the AGPLv3, see LICENCE file for details.
+// Licensed under the LGPLv3, see LICENCE file for details.
 
 package cert_test
 
diff --git a/cert/exports_test.go b/cert/exports_test.go
index d273b54ed..add340b01 100644
--- a/cert/exports_test.go
+++ b/cert/exports_test.go
@@ -1,6 +1,6 @@
 // Copyright 2016 Canonical ltd.
 // Copyright 2016 Cloudbase solutions
-// Licensed under the lgplv3, see licence file for details.
+// Licensed under the LGPLv3, see LICENCE file for details.
 
 package cert
 
diff --git a/clock/clock.go b/clock/clock.go
deleted file mode 100644
index 59a511d05..000000000
--- a/clock/clock.go
+++ /dev/null
@@ -1,53 +0,0 @@
-// Copyright 2015 Canonical Ltd.
-// Licensed under the LGPLv3, see LICENCE file for details.
-
-package clock
-
-import "time"
-
-// Clock provides an interface for dealing with clocks.
-type Clock interface {
-	// Now returns the current clock time.
-	Now() time.Time
-
-	// After waits for the duration to elapse and then sends the
-	// current time on the returned channel.
-	After(time.Duration) <-chan time.Time
-
-	// AfterFunc waits for the duration to elapse and then calls f in its own goroutine.
-	// It returns a Timer that can be used to cancel the call using its Stop method.
-	AfterFunc(d time.Duration, f func()) Timer
-
-	// NewTimer creates a new Timer that will send the current time
-	// on its channel after at least duration d.
-	NewTimer(d time.Duration) Timer
-}
-
-// Alarm returns a channel that will have the time sent on it at some point
-// after the supplied time occurs.
-//
-// This is short for c.After(t.Sub(c.Now())).
-func Alarm(c Clock, t time.Time) <-chan time.Time {
-	return c.After(t.Sub(c.Now()))
-}
-
-// The Timer type represents a single event.
-// A Timer must be created with AfterFunc.
-// This interface follows time.Timer's methods but provides easier mocking.
-type Timer interface {
-	// When the Timer expires, the current time will be sent on the
-	// channel returned from Chan, unless the Timer was created by
-	// AfterFunc.
-	Chan() <-chan time.Time
-
-	// Reset changes the timer to expire after duration d.
-	// It returns true if the timer had been active, false if
-	// the timer had expired or been stopped.
-	Reset(time.Duration) bool
-
-	// Stop prevents the Timer from firing. It returns true if
-	// the call stops the timer, false if the timer has already expired or been stopped.
-	// Stop does not close the channel, to prevent a read
-	// from the channel succeeding incorrectly.
-	Stop() bool
-}
diff --git a/clock/monotonic/monotonic.go b/clock/monotonic/monotonic.go
deleted file mode 100644
index 6941ed455..000000000
--- a/clock/monotonic/monotonic.go
+++ /dev/null
@@ -1,22 +0,0 @@
-// Copyright 2017 Canonical Ltd.
-// Licensed under the LGPLv3, see LICENCE file for details.
-
-package monotonic
-
-import (
-	"time"
-	_ "unsafe"
-)
-
-//go:noescape
-//go:linkname nanotime runtime.nanotime
-func nanotime() int64
-
-// Now returns the current time in nanoseconds from a monotonic clock.
-//
-// The result is guaranteed to not jump due to NTP or other changes to
-// system time, which may jump forward or backwards. Instead, in response to
-// such changes, the clock frequency is adjusted slowly.
-func Now() time.Duration {
-	return time.Duration(nanotime())
-}
diff --git a/clock/monotonic/monotonic.s b/clock/monotonic/monotonic.s
deleted file mode 100644
index 6f9f4945f..000000000
--- a/clock/monotonic/monotonic.s
+++ /dev/null
@@ -1,4 +0,0 @@
-// Copyright 2017 Canonical Ltd.
-// Licensed under the LGPLv3, see LICENCE file for details.
-
-// Deliberately empty - see https://github.com/golang/go/issues/15006
diff --git a/clock/monotonic/monotonic_test.go b/clock/monotonic/monotonic_test.go
deleted file mode 100644
index 7198c02a9..000000000
--- a/clock/monotonic/monotonic_test.go
+++ /dev/null
@@ -1,33 +0,0 @@
-// Copyright 2017 Canonical Ltd.
-// Licensed under the LGPLv3, see LICENCE file for details.
-
-package monotonic_test
-
-import (
-	"testing"
-	"time"
-
-	gc "gopkg.in/check.v1"
-
-	"github.com/juju/utils/clock/monotonic"
-)
-
-func TestPackage(t *testing.T) {
-	gc.TestingT(t)
-}
-
-type MonotonicSuite struct {
-}
-
-var _ = gc.Suite(&MonotonicSuite{})
-
-func (s *MonotonicSuite) TestNow(c *gc.C) {
-	var prev time.Duration
-	for i := 0; i < 1000; i++ {
-		val := monotonic.Now()
-		if val < prev {
-			c.Fatal("now is less than previous value")
-		}
-		prev = val
-	}
-}
diff --git a/clock/wall.go b/clock/wall.go
deleted file mode 100644
index 9bfc35185..000000000
--- a/clock/wall.go
+++ /dev/null
@@ -1,47 +0,0 @@
-// Copyright 2015 Canonical Ltd.
-// Licensed under the LGPLv3, see LICENCE file for details.
-
-package clock
-
-import (
-	"time"
-)
-
-// WallClock exposes wall-clock time via the Clock interface.
-var WallClock wallClock
-
-// ensure that WallClock does actually implement the Clock interface.
-var _ Clock = WallClock
-
-// WallClock exposes wall-clock time as returned by time.Now.
-type wallClock struct{}
-
-// Now is part of the Clock interface.
-func (wallClock) Now() time.Time {
-	return time.Now()
-}
-
-// After implements Clock.After.
-func (wallClock) After(d time.Duration) <-chan time.Time {
-	return time.After(d)
-}
-
-// AfterFunc implements Clock.AfterFunc.
-func (wallClock) AfterFunc(d time.Duration, f func()) Timer {
-	return wallTimer{time.AfterFunc(d, f)}
-}
-
-// NewTimer implements Clock.NewTimer.
-func (wallClock) NewTimer(d time.Duration) Timer {
-	return wallTimer{time.NewTimer(d)}
-}
-
-// wallTimer implements the Timer interface.
-type wallTimer struct {
-	*time.Timer
-}
-
-// Chan implements Timer.Chan.
-func (t wallTimer) Chan() <-chan time.Time {
-	return t.C
-}
diff --git a/context.go b/context.go
index d90790676..8cf3f1ccf 100644
--- a/context.go
+++ b/context.go
@@ -1,3 +1,6 @@
+// Copyright 2018 Canonical Ltd.
+// Licensed under the LGPLv3, see LICENCE file for details.
+
 package utils
 
 import (
@@ -7,7 +10,7 @@ import (
 
 	"golang.org/x/net/context"
 
-	"github.com/juju/utils/clock"
+	"github.com/juju/clock"
 )
 
 // timerCtx is an implementation of context.Context that
diff --git a/context_test.go b/context_test.go
index 38b9ca257..a33c8716a 100644
--- a/context_test.go
+++ b/context_test.go
@@ -1,3 +1,6 @@
+// Copyright 2018 Canonical Ltd.
+// Licensed under the LGPLv3, see LICENCE file for details.
+
 package utils_test
 
 import (
@@ -6,7 +9,7 @@ import (
 
 	"golang.org/x/net/context"
 
-	"github.com/juju/testing"
+	"github.com/juju/clock/testclock"
 	jc "github.com/juju/testing/checkers"
 	gc "gopkg.in/check.v1"
 
@@ -21,7 +24,7 @@ var _ = gc.Suite(&contextSuite{})
 // in the Go standard library.
 
 func (*contextSuite) TestDeadline(c *gc.C) {
-	clk := testing.NewClock(time.Date(2000, time.January, 1, 0, 0, 0, 0, time.UTC))
+	clk := testclock.NewClock(time.Date(2000, time.January, 1, 0, 0, 0, 0, time.UTC))
 	ctx, cancel := utils.ContextWithDeadline(context.Background(), clk, clk.Now().Add(50*time.Millisecond))
 	defer cancel()
 	c.Assert(fmt.Sprint(ctx), gc.Equals, `context.Background.WithDeadline(2000-01-01 00:00:00.05 +0000 UTC [50ms])`)
@@ -47,7 +50,7 @@ func (*contextSuite) TestDeadline(c *gc.C) {
 }
 
 func (*contextSuite) TestTimeout(c *gc.C) {
-	clk := testing.NewClock(time.Date(2000, time.January, 1, 0, 0, 0, 0, time.UTC))
+	clk := testclock.NewClock(time.Date(2000, time.January, 1, 0, 0, 0, 0, time.UTC))
 	ctx, _ := utils.ContextWithTimeout(context.Background(), clk, 50*time.Millisecond)
 	c.Assert(fmt.Sprint(ctx), gc.Equals, `context.Background.WithDeadline(2000-01-01 00:00:00.05 +0000 UTC [50ms])`)
 	testContextDeadline(c, ctx, "WithTimeout", clk, 1, 50*time.Millisecond)
@@ -63,7 +66,7 @@ func (*contextSuite) TestTimeout(c *gc.C) {
 }
 
 func (*contextSuite) TestCanceledTimeout(c *gc.C) {
-	clk := testing.NewClock(time.Date(2000, time.January, 1, 0, 0, 0, 0, time.UTC))
+	clk := testclock.NewClock(time.Date(2000, time.January, 1, 0, 0, 0, 0, time.UTC))
 	ctx, _ := utils.ContextWithTimeout(context.Background(), clk, time.Second)
 	o := otherContext{ctx}
 	ctx, cancel := utils.ContextWithTimeout(o, clk, 2*time.Second)
@@ -77,7 +80,7 @@ func (*contextSuite) TestCanceledTimeout(c *gc.C) {
 	c.Assert(ctx.Err(), gc.Equals, context.Canceled)
 }
 
-func testContextDeadline(c *gc.C, ctx context.Context, name string, clk *testing.Clock, waiters int, failAfter time.Duration) {
+func testContextDeadline(c *gc.C, ctx context.Context, name string, clk *testclock.Clock, waiters int, failAfter time.Duration) {
 	err := clk.WaitAdvance(failAfter, 0, waiters)
 	c.Assert(err, jc.ErrorIsNil)
 	select {
diff --git a/dependencies.tsv b/dependencies.tsv
index 62dfda569..26fa91e8c 100644
--- a/dependencies.tsv
+++ b/dependencies.tsv
@@ -1,12 +1,13 @@
 github.com/juju/ansiterm	git	b99631de12cf04a906c1d4e4ec54fb86eae5863d	2016-09-07T23:45:32Z
-github.com/juju/cmd	git	ad2437ef0ef282ae26e482eb1e44c02532bae1ba	2017-06-22T12:53:07Z
+github.com/juju/clock	git	d293bb356ca441f16b59562295cca74478966757	2018-05-24T02:22:03Z
+github.com/juju/cmd	git	e74f39857ca013cf63947ba2843806f7afdd380d	2017-11-07T07:04:56Z
 github.com/juju/errors	git	1b5e39b83d1835fa480e0c2ddefb040ee82d58b3	2015-09-16T12:56:42Z
-github.com/juju/gnuflag	git	4e76c56581859c14d9d87e1ddbe29e1c0f10195f	2016-08-09T16:52:14Z
+github.com/juju/gnuflag	git	2ce1bb71843d6d179b3f1c1c9cb4a72cd067fc65	2017-11-13T08:59:48Z
 github.com/juju/httpprof	git	14bf14c307672fd2456bdbf35d19cf0ccd3cf565	2014-12-17T16:00:36Z
 github.com/juju/loggo	git	8232ab8918d91c72af1a9fb94d3edbe31d88b790	2017-06-05T01:46:07Z
-github.com/juju/mutex	git	59c26ee163447c5c57f63ff71610d433862013de	2016-06-17T01:09:07Z
-github.com/juju/retry	git	62c62032529169c7ec02fa48f93349604c345e1f	2015-10-29T02:48:21Z
-github.com/juju/testing	git	2fe0e88cf2321d801acedd2b4f0d7f63735fb732	2017-06-08T05:44:51Z
+github.com/juju/mutex	git	1fe2a4bf0a3a2c10881501233ff7c6aed7790082	2017-11-10T02:00:13Z
+github.com/juju/retry	git	1998d01ba1c3eeb4a4728c4a50660025b2fe7c8f	2016-09-28T20:18:58Z
+github.com/juju/testing	git	b0b89ba330f22548fba865dd0e1d85a44e9cd7dd	2018-08-20T04:02:00Z
 github.com/juju/version	git	1f41e27e54f21acccf9b2dddae063a782a8a7ceb	2016-10-31T05:19:06Z
 github.com/julienschmidt/httprouter	git	77a895ad01ebc98a4dc95d8355bc825ce80a56f6	2015-10-13T22:55:20Z
 github.com/lunixbochs/vtclean	git	4fbf7632a2c6d3fbdb9931439bdbbeded02cbe36	2016-01-25T03:51:06Z
@@ -17,14 +18,14 @@ github.com/masterzen/xmlpath	git	13f4951698adc0fa9c1dda3e275d489a24201161	2014-0
 github.com/mattn/go-colorable	git	ed8eb9e318d7a84ce5915b495b7d35e0cfe7b5a8	2016-07-31T23:54:17Z
 github.com/mattn/go-isatty	git	66b8e73f3f5cda9f96b69efd03dd3d7fc4a5cdb8	2016-08-06T12:27:52Z
 github.com/nu7hatch/gouuid	git	179d4d0c4d8d407a32af483c2354df1d2c91e6c3	2013-12-21T20:05:32Z
-golang.org/x/crypto	git	96846453c37f0876340a66a47f3f75b1f3a6cd2d	2017-04-21T04:31:20Z
-golang.org/x/net	git	a04bdaca5b32abe1c069418fb7088ae607de5bd0	2017-10-04T03:46:48Z
-golang.org/x/sys	git	7a6e5648d140666db5d920909e082ca00a87ba2c	2017-02-01T05:12:45Z
-golang.org/x/text	git	88f656faf3f37f690df1a32515b479415e1a6769	2017-11-02T19:24:21Z
+golang.org/x/crypto	git	650f4a345ab4e5b245a3034b110ebc7299e68186	2018-02-14T00:00:28Z
+golang.org/x/net	git	61147c48b25b599e5b561d2e9c4f3e1ef489ca41	2018-04-06T21:48:16Z
+golang.org/x/sys	git	37707fdb30a5b38865cfb95e5aab41707daec7fd	2018-02-02T13:58:01Z
+golang.org/x/text	git	2910a502d2bf9e43193af9d68ca516529614eed3	2016-07-26T16:48:57Z
 gopkg.in/check.v1	git	4f90aeace3a26ad7021961c297b22c42160c7b25	2016-01-05T16:49:36Z
 gopkg.in/errgo.v1	git	442357a80af5c6bf9b6d51ae791a39c3421004f3	2016-12-22T12:58:16Z
-gopkg.in/httprequest.v1	git	35158f716c228fdf58b5a5b80cf331302d10160a	2017-11-03T09:19:05Z
-gopkg.in/juju/names.v2	git	0f8ae7499c60de56e4cb4c5eabe2d504615a18ca	2017-05-15T22:48:47Z
+gopkg.in/httprequest.v1	git	1a21782420ea13c3c6fb1d03578f446b3248edb1	2018-03-08T16:26:44Z
+gopkg.in/juju/names.v2	git	c43e8bdf2f4915a7019a2f8ad561af1498731a21	2018-05-16T01:04:14Z
 gopkg.in/mgo.v2	git	f2b6f6c918c452ad107eec89615f074e3bd80e33	2016-08-18T01:52:18Z
 gopkg.in/tomb.v1	git	dd632973f1e7218eb1089048e0798ec9ae7dceb8	2014-10-24T13:56:13Z
-gopkg.in/yaml.v2	git	a3f3340b5840cee44f372bddb5880fcbc419b46a	2017-02-08T14:18:51Z
+gopkg.in/yaml.v2	git	1be3d31502d6eabc0dd7ce5b0daab022e14a5538	2017-07-12T05:45:46Z
diff --git a/exec/exec.go b/exec/exec.go
index 8018c19f4..e19bab64b 100644
--- a/exec/exec.go
+++ b/exec/exec.go
@@ -16,9 +16,9 @@ import (
 	"syscall"
 	"time"
 
+	"github.com/juju/clock"
 	"github.com/juju/errors"
 	"github.com/juju/loggo"
-	"github.com/juju/utils/clock"
 )
 
 var logger = loggo.GetLogger("juju.util.exec")
diff --git a/exec/exec_test.go b/exec/exec_test.go
index ed79ada25..12f73a936 100644
--- a/exec/exec_test.go
+++ b/exec/exec_test.go
@@ -13,7 +13,7 @@ import (
 	jc "github.com/juju/testing/checkers"
 	gc "gopkg.in/check.v1"
 
-	"github.com/juju/utils/clock"
+	"github.com/juju/clock"
 	"github.com/juju/utils/exec"
 )
 
diff --git a/limiter.go b/limiter.go
index 6a1aefb4c..7db6689f2 100644
--- a/limiter.go
+++ b/limiter.go
@@ -8,7 +8,7 @@ import (
 	"math/rand"
 	"time"
 
-	"github.com/juju/utils/clock"
+	"github.com/juju/clock"
 )
 
 type empty struct{}
diff --git a/limiter_test.go b/limiter_test.go
index 8ad03bd85..6a183bbd7 100644
--- a/limiter_test.go
+++ b/limiter_test.go
@@ -7,6 +7,7 @@ import (
 	"fmt"
 	"time"
 
+	"github.com/juju/clock/testclock"
 	"github.com/juju/testing"
 	jc "github.com/juju/testing/checkers"
 	gc "gopkg.in/check.v1"
@@ -81,7 +82,7 @@ func (*limiterSuite) TestAcquireWaitBlocksUntilRelease(c *gc.C) {
 }
 
 func (*limiterSuite) TestAcquirePauses(c *gc.C) {
-	clk := testing.NewClock(time.Now())
+	clk := testclock.NewClock(time.Now())
 	l := utils.NewLimiterWithPause(2, 10*time.Millisecond, 20*time.Millisecond, clk)
 	acquired := make(chan bool, 1)
 	start := make(chan bool, 0)
diff --git a/ssh/run.go b/ssh/run.go
index a820b93e0..6e95b3306 100644
--- a/ssh/run.go
+++ b/ssh/run.go
@@ -10,8 +10,8 @@ import (
 	"syscall"
 	"time"
 
+	"github.com/juju/clock"
 	"github.com/juju/errors"
-	"github.com/juju/utils/clock"
 	utilexec "github.com/juju/utils/exec"
 )
 
diff --git a/ssh/ssh_gocrypto.go b/ssh/ssh_gocrypto.go
index 2cef54f26..3fe32bf3c 100644
--- a/ssh/ssh_gocrypto.go
+++ b/ssh/ssh_gocrypto.go
@@ -17,10 +17,10 @@ import (
 	"sync"
 	"time"
 
+	"github.com/juju/clock"
 	"github.com/juju/errors"
 	"github.com/juju/mutex"
 	"github.com/juju/utils"
-	"github.com/juju/utils/clock"
 	"golang.org/x/crypto/ssh"
 	"golang.org/x/crypto/ssh/knownhosts"
 	"golang.org/x/crypto/ssh/terminal"
diff --git a/timer.go b/timer.go
index 6b32f09df..6f8b7ee4c 100644
--- a/timer.go
+++ b/timer.go
@@ -8,7 +8,7 @@ import (
 	"math/rand"
 	"time"
 
-	"github.com/juju/utils/clock"
+	"github.com/juju/clock"
 )
 
 // Countdown implements a timer that will call a provided function.
diff --git a/timer_test.go b/timer_test.go
index 1ec957393..3bc1d72b8 100644
--- a/timer_test.go
+++ b/timer_test.go
@@ -10,10 +10,10 @@ import (
 
 	gc "gopkg.in/check.v1"
 
+	"github.com/juju/clock"
 	"github.com/juju/testing"
 	jc "github.com/juju/testing/checkers"
 	"github.com/juju/utils"
-	"github.com/juju/utils/clock"
 )
 
 type TestStdTimer struct {