diff --git a/CHANGELOG.md b/CHANGELOG.md
index fac987125..cd6867d28 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,14 @@
 # CHANGELOG
 
+## v12.4.2
+
+### Bug Fixes
+
+- Improvements to the fixes made in v12.4.1.
+  - Remove `override` stanza from Gopkg.toml and `replace` directive from go.mod as they don't apply when being consumed as a dependency.
+  - Switched to latest version of `ocagent` that still depends on protobuf v1.2.
+  - Add indirect dependencies to the `required` clause with matching `constraint` stanzas so that `dep` dependencies match go.sum.
+
 ## v12.4.1
 
 ### Bug Fixes
diff --git a/Gopkg.lock b/Gopkg.lock
index d2612c098..ebb731e47 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -2,25 +2,27 @@
 
 
 [[projects]]
-  digest = "1:a366d29e068f3f3639f83e87feec6dc7c5977d316a8214e3937ced730383858d"
+  digest = "1:73be43a59b6c938f2f0aa18fe911dc8643164164ab7cd6629306abeb3d002877"
   name = "contrib.go.opencensus.io/exporter/ocagent"
   packages = ["."]
   pruneopts = "UT"
-  revision = "7c99379c268784cc5f9eef1e54999232c084db47"
-  version = "v0.3.0"
+  revision = "060e6898ab87d943e2ff1090efb927fbc5181cea"
+  version = "v0.4.6"
 
 [[projects]]
-  digest = "1:65b0d980b428a6ad4425f2df4cd5410edd81f044cf527bd1c345368444649e58"
+  digest = "1:72ae2856339c681442aefad5976ba3b2e9d6709580147ab11a2a4ad9025995c8"
   name = "github.com/census-instrumentation/opencensus-proto"
   packages = [
     "gen-go/agent/common/v1",
+    "gen-go/agent/metrics/v1",
     "gen-go/agent/trace/v1",
+    "gen-go/metrics/v1",
     "gen-go/resource/v1",
+    "gen-go/stats/v1",
     "gen-go/trace/v1",
   ]
   pruneopts = "UT"
-  revision = "7f2434bc10da710debe5c4315ed6d4df454b4024"
-  version = "v0.1.0"
+  revision = "ba49f56771b83cff7bea7f34d1236fc139dbc471"
 
 [[projects]]
   digest = "1:ffe9824d294da03b391f44e1ae8281281b4afc1bdaa9588c9097785e3af10cec"
@@ -47,27 +49,33 @@
   version = "v1.1.0"
 
 [[projects]]
-  digest = "1:e1b86a55f22a21007da87160a3e0897a35392af410d33ae82a4f165f1eec13cf"
+  digest = "1:ab79000fab128a653e6f1fc2ebe58df147bc150273960fee72fe9176ecc8b162"
   name = "github.com/golang/protobuf"
   packages = [
+    "jsonpb",
     "proto",
     "ptypes",
     "ptypes/any",
     "ptypes/duration",
+    "ptypes/struct",
     "ptypes/timestamp",
     "ptypes/wrappers",
   ]
   pruneopts = "UT"
-  revision = "b5d812f8a3706043e23a9cd5babf2e5423744d30"
-  version = "v1.3.1"
+  revision = "aa810b61a9c79d51363740d207bb46cf8e620ed5"
+  version = "v1.2.0"
 
 [[projects]]
-  digest = "1:67474f760e9ac3799f740db2c489e6423a4cde45520673ec123ac831ad849cb8"
-  name = "github.com/hashicorp/golang-lru"
-  packages = ["simplelru"]
+  digest = "1:ee73ed01fc93b8aa38a7f25543afed400df661992eeb7d3b250100b8b8f989b9"
+  name = "github.com/grpc-ecosystem/grpc-gateway"
+  packages = [
+    "runtime",
+    "runtime/internal",
+    "utilities",
+  ]
   pruneopts = "UT"
-  revision = "7087cb70de9f7a8bc0a10c375cb0d2280a8edf9c"
-  version = "v0.5.1"
+  revision = "8558711daa6c2853489043207b563dceacbc19cf"
+  version = "v1.5.0"
 
 [[projects]]
   digest = "1:5d231480e1c64a726869bc4142d270184c419749d34f167646baa21008eb0a79"
@@ -97,14 +105,13 @@
   version = "v1.3.0"
 
 [[projects]]
-  digest = "1:35055d0ff65fefb6c9b3ee2f36c527de7fcfb14d59f78acf7d382ff7c07bc6a2"
+  digest = "1:032feaff40ceceb08d163a35388c48dc3ab017314e99452567aeda612d7b0bc4"
   name = "go.opencensus.io"
   packages = [
     ".",
+    "exemplar",
     "internal",
     "internal/tagencoding",
-    "metric/metricdata",
-    "metric/metricproducer",
     "plugin/ochttp",
     "plugin/ochttp/propagation/b3",
     "plugin/ochttp/propagation/tracecontext",
@@ -119,8 +126,7 @@
     "trace/tracestate",
   ]
   pruneopts = "UT"
-  revision = "df6e2001952312404b06f5f6f03fcb4aec1648e5"
-  version = "v0.21.0"
+  revision = "aab39bd6a98b853ab66c8a564f5d6cfcad59ce8a"
 
 [[projects]]
   branch = "master"
@@ -131,7 +137,7 @@
     "pkcs12/internal/rc2",
   ]
   pruneopts = "UT"
-  revision = "f416ebab96af27ca70b6e5c23d6a0747530da626"
+  revision = "4def268fd1a49955bfb3dda92fe3db4f924f2285"
 
 [[projects]]
   branch = "master"
@@ -146,10 +152,11 @@
 
 [[projects]]
   branch = "master"
-  digest = "1:d9403fe14e9ea0436e59be99b24c76517720c524d5649c3359224364e70252cd"
+  digest = "1:eae689808191546269bf951e1e66e0b6bc468be58a0498c0f037feeef2c67bab"
   name = "golang.org/x/net"
   packages = [
     "context",
+    "context/ctxhttp",
     "http/httpguts",
     "http2",
     "http2/hpack",
@@ -158,32 +165,34 @@
     "trace",
   ]
   pruneopts = "UT"
-  revision = "1da14a5a36f220ea3f03470682b737b1dfd5de22"
+  revision = "ca1201d0de80cfde86cb01aea620983605dfe99b"
 
 [[projects]]
   branch = "master"
-  digest = "1:75515eedc0dc2cb0b40372008b616fa2841d831c63eedd403285ff286c593295"
+  digest = "1:382bb5a7fb4034db3b6a2d19e5a4a6bcf52f4750530603c01ca18a172fa3089b"
   name = "golang.org/x/sync"
   packages = ["semaphore"]
   pruneopts = "UT"
-  revision = "56d357773e8497dfd526f0727e187720d1093757"
+  revision = "112230192c580c3556b8cee6403af37a4fc5f28c"
 
 [[projects]]
   branch = "master"
-  digest = "1:28d862f4f9bf2d1976d1d320481bff661b7565eb876d4df2a981f79e7f40e4cd"
+  digest = "1:fdfd985fe7956d77128572032636b5c1b7b58a81acd7089e96923e2f9539c573"
   name = "golang.org/x/sys"
   packages = ["unix"]
   pruneopts = "UT"
-  revision = "12500544f89f9420afe9529ba8940bf72d294972"
+  revision = "51ab0e2deafac1f46c46ad59cf0921be2f180c3d"
 
 [[projects]]
-  digest = "1:a2ab62866c75542dd18d2b069fec854577a20211d7c0ea6ae746072a1dccdd18"
+  digest = "1:8d8faad6b12a3a4c819a3f9618cb6ee1fa1cfc33253abeeea8b55336721e3405"
   name = "golang.org/x/text"
   packages = [
     "collate",
     "collate/build",
     "internal/colltab",
     "internal/gen",
+    "internal/language",
+    "internal/language/compact",
     "internal/tag",
     "internal/triegen",
     "internal/ucd",
@@ -196,8 +205,8 @@
     "unicode/rangetable",
   ]
   pruneopts = "UT"
-  revision = "f21a4dfb5e38f5895301dc265a8def02365cc3d0"
-  version = "v0.3.0"
+  revision = "342b2e1fbaa52c93f31447ad2c6abc048c63e475"
+  version = "v0.3.2"
 
 [[projects]]
   branch = "master"
@@ -210,49 +219,50 @@
     "go/types/typeutil",
   ]
   pruneopts = "UT"
-  revision = "7e40e1726ee0fcf776fcf00f033ef7ed114ca1c4"
+  revision = "35ef2682e516ea0dd37d51a73b1e957db246ebbf"
 
 [[projects]]
-  digest = "1:5f003878aabe31d7f6b842d4de32b41c46c214bb629bb485387dbcce1edf5643"
+  digest = "1:bd681ade881db4ab0c29eafaa22ea17e488ff7795c285f69fc9b5aada6a49bc8"
   name = "google.golang.org/api"
-  packages = ["support/bundler"]
+  packages = [
+    "container/v1",
+    "gensupport",
+    "googleapi",
+    "googleapi/internal/uritemplates",
+    "support/bundler",
+  ]
   pruneopts = "UT"
-  revision = "0cbcb99a9ea0c8023c794b2693cbe1def82ed4d7"
-  version = "v0.3.2"
+  revision = "7ca32eb868bf53ea2fc406698eb98583a8073d19"
 
 [[projects]]
-  branch = "master"
-  digest = "1:c3076e7defee87de1236f1814beb588f40a75544c60121e6eb38b3b3721783e2"
+  digest = "1:5bec19a56fc7942f49b710f964d32ca927a4115794c412553cd5a2d2f663f333"
   name = "google.golang.org/genproto"
-  packages = ["googleapis/rpc/status"]
+  packages = [
+    ".",
+    "googleapis/rpc/status",
+  ]
   pruneopts = "UT"
-  revision = "d1146b9035b912113a38af3b138eb2af567b2c67"
+  revision = "11092d34479b07829b72e10713b159248caf5dad"
 
 [[projects]]
-  digest = "1:31d87f39886fb38a2b6c097ff3b9f985d6960772170d64a68246f7790e955746"
+  digest = "1:ab8e92d746fb5c4c18846b0879842ac8e53b3d352449423d0924a11f1020ae1b"
   name = "google.golang.org/grpc"
   packages = [
     ".",
     "balancer",
     "balancer/base",
     "balancer/roundrobin",
-    "binarylog/grpc_binarylog_v1",
     "codes",
     "connectivity",
     "credentials",
-    "credentials/internal",
     "encoding",
     "encoding/proto",
     "grpclog",
     "internal",
     "internal/backoff",
-    "internal/balancerload",
-    "internal/binarylog",
     "internal/channelz",
     "internal/envconfig",
     "internal/grpcrand",
-    "internal/grpcsync",
-    "internal/syscall",
     "internal/transport",
     "keepalive",
     "metadata",
@@ -266,16 +276,19 @@
     "tap",
   ]
   pruneopts = "UT"
-  revision = "236199dd5f8031d698fb64091194aecd1c3895b2"
-  version = "v1.20.0"
+  revision = "8dea3dc473e90c8179e519d91302d0597c0ca1d1"
+  version = "v1.15.0"
 
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
   input-imports = [
     "contrib.go.opencensus.io/exporter/ocagent",
+    "github.com/census-instrumentation/opencensus-proto/gen-go/stats/v1",
     "github.com/dgrijalva/jwt-go",
     "github.com/dimchansky/utfbom",
+    "github.com/golang/protobuf/proto",
+    "github.com/grpc-ecosystem/grpc-gateway/runtime",
     "github.com/mitchellh/go-homedir",
     "github.com/stretchr/testify/require",
     "go.opencensus.io/plugin/ochttp",
@@ -284,6 +297,9 @@
     "go.opencensus.io/trace",
     "golang.org/x/crypto/pkcs12",
     "golang.org/x/lint/golint",
+    "google.golang.org/api/container/v1",
+    "google.golang.org/genproto",
+    "google.golang.org/grpc",
   ]
   solver-name = "gps-cdcl"
   solver-version = 1
diff --git a/Gopkg.toml b/Gopkg.toml
index 8c95ff75d..5783e05dc 100644
--- a/Gopkg.toml
+++ b/Gopkg.toml
@@ -19,7 +19,15 @@
 #  name = "github.com/x/y"
 #  version = "2.4.0"
 
-required = ["golang.org/x/lint/golint"]
+required = [
+    "github.com/census-instrumentation/opencensus-proto/gen-go/stats/v1",
+    "github.com/golang/protobuf/proto",
+    "github.com/grpc-ecosystem/grpc-gateway/runtime",
+    "golang.org/x/lint/golint",
+    "google.golang.org/api/container/v1",
+    "google.golang.org/genproto",
+    "google.golang.org/grpc"
+  ]
 
 [prune]
   unused-packages = true
@@ -43,12 +51,32 @@ required = ["golang.org/x/lint/golint"]
 
 [[constraint]]
   name = "go.opencensus.io"
-  version = "=0.21.0"
+  revision = "aab39bd6a98b853ab66c8a564f5d6cfcad59ce8a"
 
 [[constraint]]
   name = "contrib.go.opencensus.io/exporter/ocagent"
-  version = "=0.3.0"
+  version = "=0.4.6"
 
-[[override]]
+[[constraint]]
   name = "github.com/census-instrumentation/opencensus-proto"
-  version = "=0.1.0"
+  revision = "ba49f56771b83cff7bea7f34d1236fc139dbc471"
+
+[[constraint]]
+  name = "github.com/golang/protobuf"
+  version = "=1.2.0"
+
+[[constraint]]
+  name = "google.golang.org/api"
+  revision = "7ca32eb868bf53ea2fc406698eb98583a8073d19"
+
+[[constraint]]
+  name = "google.golang.org/genproto"
+  revision = "11092d34479b07829b72e10713b159248caf5dad"
+
+[[constraint]]
+  name = "google.golang.org/grpc"
+  version = "=1.15.0"
+
+[[constraint]]
+  name = "github.com/grpc-ecosystem/grpc-gateway"
+  version = "=1.5.0"
diff --git a/autorest/version.go b/autorest/version.go
index c44651696..69a41fa9a 100644
--- a/autorest/version.go
+++ b/autorest/version.go
@@ -19,7 +19,7 @@ import (
 	"runtime"
 )
 
-const number = "v12.4.1"
+const number = "v12.4.2"
 
 var (
 	userAgent = fmt.Sprintf("Go/%s (%s-%s) go-autorest/%s",
diff --git a/tracing/go.mod b/tracing/go.mod
index 6a9394c51..a9641d7a9 100644
--- a/tracing/go.mod
+++ b/tracing/go.mod
@@ -3,11 +3,7 @@ module github.com/Azure/go-autorest/tracing
 go 1.12
 
 require (
-	// later releases of ocagent aren't compatible with our version of opencensus
-	contrib.go.opencensus.io/exporter/ocagent v0.3.0
-	// keep this pre-v0.22.0 to avoid dependency on protobuf v1.3+
-	go.opencensus.io v0.21.0
+	// use older versions to avoid taking a dependency on protobuf v1.3+
+	contrib.go.opencensus.io/exporter/ocagent v0.4.6
+	go.opencensus.io v0.18.1-0.20181204023538-aab39bd6a98b
 )
-
-// pin this to v0.1.0 to avoid breaking changes incompatible with our version of ocagent
-replace github.com/census-instrumentation/opencensus-proto => github.com/census-instrumentation/opencensus-proto v0.1.0
diff --git a/tracing/go.sum b/tracing/go.sum
index 736a4f4f2..53b1f8b97 100644
--- a/tracing/go.sum
+++ b/tracing/go.sum
@@ -1,12 +1,12 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-contrib.go.opencensus.io/exporter/ocagent v0.3.0 h1:fyqPXp7d+BBV3tXa7EE1CYrObJr7R9jTAOO/AsdcQBg=
-contrib.go.opencensus.io/exporter/ocagent v0.3.0/go.mod h1:0fnkYHF+ORKj7HWzOExKkUHeFX79gXSKUQbpnAM+wzo=
+contrib.go.opencensus.io/exporter/ocagent v0.4.6 h1:xVeoJwnzMbseoL9YWhohR6SN/GncvP1p/fznasLkT/E=
+contrib.go.opencensus.io/exporter/ocagent v0.4.6/go.mod h1:YuG83h+XWwqWjvCqn7vK4KSyLKhThY3+gNGQ37iS2V0=
 git.apache.org/thrift.git v0.0.0-20180902110319-2566ecd5d999/go.mod h1:fPE2ZNJGynbRyZ4dJvy6G277gSllfV2HJqblrnkyeyg=
-github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
-github.com/census-instrumentation/opencensus-proto v0.1.0 h1:VwZ9smxzX8u14/125wHIX7ARV+YhR+L4JADswwxWK0Y=
-github.com/census-instrumentation/opencensus-proto v0.1.0/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
+github.com/census-instrumentation/opencensus-proto v0.1.0-0.20181214143942-ba49f56771b8 h1:gUqsFVdUKoRHNg8fkFd8gB5OOEa/g5EwlAHznb4zjbI=
+github.com/census-instrumentation/opencensus-proto v0.1.0-0.20181214143942-ba49f56771b8/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
+github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 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/golang/lint v0.0.0-20180702182130-06c8688daad7/go.mod h1:tluoj9z5200jBnyusfRPU2LqT6J+DAorxEvtC7LHB+E=
@@ -15,8 +15,8 @@ github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/google/go-cmp v0.2.0 h1:+dTQ8DZQJz0Mb/HjFlkptS1FeQ4cWSnN941F8aEG4SQ=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
-github.com/hashicorp/golang-lru v0.5.0 h1:CL2msUPvZTLb5O648aiLNJw3hnBxN2+1Jq8rCOH9wdo=
-github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
+github.com/grpc-ecosystem/grpc-gateway v1.5.0 h1:WcmKMm43DR7RdtlkEXQJyo5ws8iTp98CyhCCbOHMvNI=
+github.com/grpc-ecosystem/grpc-gateway v1.5.0/go.mod h1:RSKVYQBd5MCa4OVpNdGskqpgL2+G+NZTnrVHpWWfpdw=
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
 github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
 github.com/openzipkin/zipkin-go v0.1.1/go.mod h1:NtoC/o8u3JlF1lSlyPNswIbeQH9bJTmOf0Erfk+hxe8=
@@ -24,45 +24,30 @@ github.com/prometheus/client_golang v0.8.0/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXP
 github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
 github.com/prometheus/common v0.0.0-20180801064454-c7de2306084e/go.mod h1:daVV7qP5qjZbuso7PdcryaAu0sAZbrN9i7WWcTMWvro=
 github.com/prometheus/procfs v0.0.0-20180725123919-05ee40e3a273/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
-go.opencensus.io v0.17.0/go.mod h1:mp1VrMQxhlqqDpKvH4UcQUa4YwlzNmymAjPrDdfxNpI=
-go.opencensus.io v0.21.0 h1:mU6zScU4U1YAFPHEHYk+3JC4SY7JxgkqS10ZOSyksNg=
-go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
-golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
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