diff --git a/examples/Cargo.toml b/examples/Cargo.toml
index 037a65463..26a78bd13 100644
--- a/examples/Cargo.toml
+++ b/examples/Cargo.toml
@@ -180,7 +180,7 @@ path = "src/streaming/server.rs"
 
 [dependencies]
 tonic = { path = "../tonic", features = ["tls", "compression"] }
-prost = "0.8"
+prost = "0.9"
 tokio = { version = "1.0", features = ["rt-multi-thread", "time", "fs", "macros", "net"] }
 tokio-stream = { version =  "0.1", features = ["net"] }
 async-stream = "0.3"
@@ -196,7 +196,7 @@ tracing-subscriber = { version = "0.2", features = ["tracing-log"] }
 tracing-attributes = "0.1"
 tracing-futures = "0.2"
 # Required for wellknown types
-prost-types = "0.8"
+prost-types = "0.9"
 # Hyper example
 hyper = { version = "0.14", features = ["full"] }
 warp = "0.3"
diff --git a/interop/Cargo.toml b/interop/Cargo.toml
index d00036f53..2aed933f5 100644
--- a/interop/Cargo.toml
+++ b/interop/Cargo.toml
@@ -19,8 +19,8 @@ tokio = { version = "1.0", features = ["rt-multi-thread", "time", "macros", "fs"
 tokio-stream = "0.1"
 async-stream = "0.3"
 tonic = { path = "../tonic", features = ["tls"] }
-prost = "0.8"
-prost-derive = "0.8"
+prost = "0.9"
+prost-derive = "0.9"
 bytes = "1.0"
 http = "0.2"
 futures-core = "0.3"
diff --git a/tests/ambiguous_methods/Cargo.toml b/tests/ambiguous_methods/Cargo.toml
index 3941800ce..e0956a277 100644
--- a/tests/ambiguous_methods/Cargo.toml
+++ b/tests/ambiguous_methods/Cargo.toml
@@ -10,7 +10,7 @@ license = "MIT"
 
 [dependencies]
 tonic = { path= "../../tonic" }
-prost = "0.8"
+prost = "0.9"
 
 [build-dependencies]
 tonic-build = { path= "../../tonic-build" }
diff --git a/tests/compression/Cargo.toml b/tests/compression/Cargo.toml
index ecb1fb709..cf0870325 100644
--- a/tests/compression/Cargo.toml
+++ b/tests/compression/Cargo.toml
@@ -8,7 +8,7 @@ license = "MIT"
 
 [dependencies]
 tonic = { path = "../../tonic", features = ["compression"] }
-prost = "0.8"
+prost = "0.9"
 tokio = { version = "1.0", features = ["macros", "rt-multi-thread", "net"] }
 tower = { version = "0.4", features = [] }
 http-body = "0.4"
diff --git a/tests/extern_path/my_application/Cargo.toml b/tests/extern_path/my_application/Cargo.toml
index 6ab297aac..8a1e406ad 100644
--- a/tests/extern_path/my_application/Cargo.toml
+++ b/tests/extern_path/my_application/Cargo.toml
@@ -10,8 +10,8 @@ license = "MIT"
 
 [dependencies]
 tonic = { path= "../../../tonic" }
-prost = "0.8"
-prost-types = "0.8"
+prost = "0.9"
+prost-types = "0.9"
 uuid = { package = "uuid1", path= "../uuid" }
 
 [build-dependencies]
diff --git a/tests/extern_path/uuid/Cargo.toml b/tests/extern_path/uuid/Cargo.toml
index cbb106cf2..6515ca371 100644
--- a/tests/extern_path/uuid/Cargo.toml
+++ b/tests/extern_path/uuid/Cargo.toml
@@ -9,7 +9,7 @@ license = "MIT"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-prost = "0.8"
+prost = "0.9"
 bytes = "1.0"
 [build-dependencies]
-prost-build = "0.8"
+prost-build = "0.9"
diff --git a/tests/included_service/Cargo.toml b/tests/included_service/Cargo.toml
index c03133d56..53dd38f4b 100644
--- a/tests/included_service/Cargo.toml
+++ b/tests/included_service/Cargo.toml
@@ -10,7 +10,7 @@ license = "MIT"
 
 [dependencies]
 tonic = { path = "../../tonic" }
-prost = "0.8"
+prost = "0.9"
 
 [build-dependencies]
 tonic-build = { path = "../../tonic-build" }
diff --git a/tests/integration_tests/Cargo.toml b/tests/integration_tests/Cargo.toml
index 65a7dd53f..9d14221a5 100644
--- a/tests/integration_tests/Cargo.toml
+++ b/tests/integration_tests/Cargo.toml
@@ -10,7 +10,7 @@ license = "MIT"
 
 [dependencies]
 tonic = { path = "../../tonic" }
-prost = "0.8"
+prost = "0.9"
 futures-util = "0.3"
 bytes = "1.0"
 
diff --git a/tests/root-crate-path/Cargo.toml b/tests/root-crate-path/Cargo.toml
index 192d59123..f57c2a010 100644
--- a/tests/root-crate-path/Cargo.toml
+++ b/tests/root-crate-path/Cargo.toml
@@ -8,7 +8,7 @@ license = "MIT"
 
 [dependencies]
 tonic = { path = "../../tonic" }
-prost = "0.8"
+prost = "0.9"
 
 [build_dependencies]
 tonic-build = { path = "../../tonic-build" }
diff --git a/tests/same_name/Cargo.toml b/tests/same_name/Cargo.toml
index 35e9e6c59..c34d2460f 100644
--- a/tests/same_name/Cargo.toml
+++ b/tests/same_name/Cargo.toml
@@ -10,7 +10,7 @@ license = "MIT"
 
 [dependencies]
 tonic = { path = "../../tonic" }
-prost = "0.8"
+prost = "0.9"
 
 [build-dependencies]
 tonic-build = { path = "../../tonic-build" }
diff --git a/tests/service_named_service/Cargo.toml b/tests/service_named_service/Cargo.toml
index 573b049dc..cf03c1a96 100644
--- a/tests/service_named_service/Cargo.toml
+++ b/tests/service_named_service/Cargo.toml
@@ -10,7 +10,7 @@ license = "MIT"
 
 [dependencies]
 tonic = { path = "../../tonic" }
-prost = "0.8"
+prost = "0.9"
 
 [build-dependencies]
 tonic-build = { path = "../../tonic-build" }
diff --git a/tests/stream_conflict/Cargo.toml b/tests/stream_conflict/Cargo.toml
index c59f409c4..b4f0e9232 100644
--- a/tests/stream_conflict/Cargo.toml
+++ b/tests/stream_conflict/Cargo.toml
@@ -9,7 +9,7 @@ edition = "2018"
 
 [dependencies]
 tonic = { path = "../../tonic" }
-prost = "0.8"
+prost = "0.9"
 
 [build-dependencies]
 tonic-build = { path = "../../tonic-build" }
diff --git a/tests/wellknown-compiled/Cargo.toml b/tests/wellknown-compiled/Cargo.toml
index 7f739654e..5a5c83738 100644
--- a/tests/wellknown-compiled/Cargo.toml
+++ b/tests/wellknown-compiled/Cargo.toml
@@ -13,7 +13,7 @@ doctest = false
 
 [dependencies]
 tonic = { path = "../../tonic" }
-prost = "0.8"
+prost = "0.9"
 
 [build-dependencies]
 tonic-build = { path = "../../tonic-build" }
diff --git a/tests/wellknown/Cargo.toml b/tests/wellknown/Cargo.toml
index 2f576f5ee..300d2e7c4 100644
--- a/tests/wellknown/Cargo.toml
+++ b/tests/wellknown/Cargo.toml
@@ -10,8 +10,8 @@ license = "MIT"
 
 [dependencies]
 tonic = { path = "../../tonic" }
-prost = "0.8"
-prost-types = "0.8"
+prost = "0.9"
+prost-types = "0.9"
 
 [build-dependencies]
 tonic-build = { path = "../../tonic-build" }
diff --git a/tonic-build/Cargo.toml b/tonic-build/Cargo.toml
index 4ed8b19fd..92ecfce7e 100644
--- a/tonic-build/Cargo.toml
+++ b/tonic-build/Cargo.toml
@@ -1,10 +1,10 @@
 [package]
 name = "tonic-build"
-version = "0.5.2"
+version = "0.6.0"
 authors = ["Lucio Franco <luciofranco14@gmail.com>"]
 edition = "2018"
 license = "MIT"
-documentation = "https://docs.rs/tonic-build/0.5.2/tonic_build/"
+documentation = "https://docs.rs/tonic-build/0.6.0/tonic_build/"
 repository = "https://github.com/hyperium/tonic"
 homepage = "https://github.com/hyperium/tonic"
 description = """
@@ -16,7 +16,7 @@ keywords = ["rpc", "grpc", "async", "codegen", "protobuf"]
 
 
 [dependencies]
-prost-build = { version = "0.8", optional = true }
+prost-build = { version = "0.9", optional = true }
 syn = "1.0"
 quote = "1.0"
 proc-macro2 = "1.0"
diff --git a/tonic-health/Cargo.toml b/tonic-health/Cargo.toml
index fcb27e76b..0dd3712f5 100644
--- a/tonic-health/Cargo.toml
+++ b/tonic-health/Cargo.toml
@@ -20,9 +20,9 @@ transport = ["tonic/transport"]
 
 [dependencies]
 tokio = { version = "1.0", features = ["sync"] }
-tonic = { version = "0.5", path = "../tonic", features = ["codegen", "prost"] }
+tonic = { version = "0.6", path = "../tonic", features = ["codegen", "prost"] }
 bytes = "1.0"
-prost = "0.8"
+prost = "0.9"
 tokio-stream = "0.1"
 async-stream = "0.3"
 
@@ -30,4 +30,4 @@ async-stream = "0.3"
 tokio = { version = "1.0", features = ["rt-multi-thread", "macros"]}
 
 [build-dependencies]
-tonic-build = { version = "0.5", path = "../tonic-build" }
+tonic-build = { version = "0.6", path = "../tonic-build" }
diff --git a/tonic-reflection/Cargo.toml b/tonic-reflection/Cargo.toml
index fd370a193..0bbd327d4 100644
--- a/tonic-reflection/Cargo.toml
+++ b/tonic-reflection/Cargo.toml
@@ -18,14 +18,14 @@ keywords = ["rpc", "grpc", "async", "reflection"]
 
 [dependencies]
 bytes = "1.0"
-prost = "0.8"
-prost-types = "0.8"
+prost = "0.9"
+prost-types = "0.9"
 tokio = { version = "1.0", features = ["sync"] }
 tokio-stream = { version = "0.1", features = ["net"] }
-tonic = { version = "0.5", path = "../tonic", features = ["codegen", "prost"] }
+tonic = { version = "0.6", path = "../tonic", features = ["codegen", "prost"] }
 
 [build-dependencies]
-tonic-build = { version = "0.5", path = "../tonic-build" }
+tonic-build = { version = "0.6", path = "../tonic-build" }
 
 [dev-dependencies]
 futures = "0.3"
diff --git a/tonic-types/Cargo.toml b/tonic-types/Cargo.toml
index 744301fde..5adfeabab 100644
--- a/tonic-types/Cargo.toml
+++ b/tonic-types/Cargo.toml
@@ -1,10 +1,10 @@
 [package]
 name = "tonic-types"
-version = "0.3.0"
+version = "0.4.0"
 authors = ["Lucio Franco <luciofranco14@gmail.com>"]
 edition = "2018"
 license = "MIT"
-documentation = "https://docs.rs/tonic-types/0.3.0/tonic-types/"
+documentation = "https://docs.rs/tonic-types/0.4.0/tonic-types/"
 repository = "https://github.com/hyperium/tonic"
 homepage = "https://github.com/hyperium/tonic"
 description = """
@@ -15,8 +15,8 @@ categories = ["web-programming", "network-programming", "asynchronous"]
 keywords = ["rpc", "grpc", "protobuf"]
 
 [dependencies]
-prost = "0.8"
-prost-types = "0.8"
+prost = "0.9"
+prost-types = "0.9"
 
 [build-dependencies]
-prost-build = "0.8"
+prost-build = "0.9"
diff --git a/tonic-web/Cargo.toml b/tonic-web/Cargo.toml
index 6f2be83f8..845b7a56f 100644
--- a/tonic-web/Cargo.toml
+++ b/tonic-web/Cargo.toml
@@ -15,7 +15,7 @@ categories = ["network-programming", "asynchronous"]
 keywords = ["rpc", "grpc", "grpc-web"]
 
 [dependencies]
-tonic = { version = "0.5", path = "../tonic", default-features = false, features = ["transport"] }
+tonic = { version = "0.6", path = "../tonic", default-features = false, features = ["transport"] }
 http = "0.2"
 base64 = "0.13"
 futures-core = "0.3"
diff --git a/tonic-web/tests/integration/Cargo.toml b/tonic-web/tests/integration/Cargo.toml
index 20aa39213..11de50089 100644
--- a/tonic-web/tests/integration/Cargo.toml
+++ b/tonic-web/tests/integration/Cargo.toml
@@ -8,7 +8,7 @@ edition = "2018"
 [dependencies]
 tonic = { path = "../../../tonic" }
 tonic-web = { path = "../../../tonic-web" }
-prost = "0.8"
+prost = "0.9"
 tokio = { version = "1", features = ["macros", "rt", "net"] }
 base64 = "0.13"
 bytes = "1.0"
diff --git a/tonic/Cargo.toml b/tonic/Cargo.toml
index 69a4d6b0d..7d4f947b2 100644
--- a/tonic/Cargo.toml
+++ b/tonic/Cargo.toml
@@ -7,12 +7,12 @@ name = "tonic"
 #   - Cargo.toml
 #   - README.md
 # - Update CHANGELOG.md.
-# - Create "v0.5.x" git tag.
-version = "0.5.2"
+# - Create "v0.6.x" git tag.
+version = "0.6.0"
 authors = ["Lucio Franco <luciofranco14@gmail.com>"]
 edition = "2018"
 license = "MIT"
-documentation = "https://docs.rs/tonic/0.5.2/tonic/"
+documentation = "https://docs.rs/tonic/0.6.0/tonic/"
 repository = "https://github.com/hyperium/tonic"
 homepage = "https://github.com/hyperium/tonic"
 description = """
@@ -63,8 +63,8 @@ http-body = "0.4.2"
 pin-project = "1.0"
 
 # prost
-prost1 = { package = "prost", version = "0.8", optional = true }
-prost-derive = { version = "0.8", optional = true }
+prost1 = { package = "prost", version = "0.9", optional = true }
+prost-derive = { version = "0.9", optional = true }
 
 # codegen
 async-trait = { version = "0.1.13", optional = true }