diff --git a/postgres-protocol/Cargo.toml b/postgres-protocol/Cargo.toml
index 3ac6acfb3..ed5bca864 100644
--- a/postgres-protocol/Cargo.toml
+++ b/postgres-protocol/Cargo.toml
@@ -11,7 +11,7 @@ readme = "../README.md"
 [dependencies]
 base64 = "0.13"
 byteorder = "1.0"
-bytes = "0.5"
+bytes = "1.0"
 fallible-iterator = "0.2"
 hmac = "0.10"
 md5 = "0.7"
diff --git a/postgres-types/Cargo.toml b/postgres-types/Cargo.toml
index c5e706f6e..00babcce2 100644
--- a/postgres-types/Cargo.toml
+++ b/postgres-types/Cargo.toml
@@ -22,7 +22,7 @@ with-uuid-0_8 = ["uuid-08"]
 with-time-0_2 = ["time-02"]
 
 [dependencies]
-bytes = "0.5"
+bytes = "1.0"
 fallible-iterator = "0.2"
 postgres-protocol = { version = "0.5.0", path = "../postgres-protocol" }
 postgres-derive = { version = "0.4.0", optional = true, path = "../postgres-derive" }
diff --git a/postgres/Cargo.toml b/postgres/Cargo.toml
index b84becd19..30d23260f 100644
--- a/postgres/Cargo.toml
+++ b/postgres/Cargo.toml
@@ -31,7 +31,7 @@ with-uuid-0_8 = ["tokio-postgres/with-uuid-0_8"]
 with-time-0_2 = ["tokio-postgres/with-time-0_2"]
 
 [dependencies]
-bytes = "0.5"
+bytes = "1.0"
 fallible-iterator = "0.2"
 futures = "0.3"
 tokio-postgres = { version = "0.6.0", path = "../tokio-postgres" }
diff --git a/tokio-postgres/Cargo.toml b/tokio-postgres/Cargo.toml
index f659663e1..1923fe0b2 100644
--- a/tokio-postgres/Cargo.toml
+++ b/tokio-postgres/Cargo.toml
@@ -38,7 +38,7 @@ with-time-0_2 = ["postgres-types/with-time-0_2"]
 
 [dependencies]
 async-trait = "0.1"
-bytes = "0.5"
+bytes = "1.0"
 byteorder = "1.0"
 fallible-iterator = "0.2"
 futures = "0.3"