diff --git a/bellman/Cargo.toml b/bellman/Cargo.toml
index 70521e7..f21e4e1 100644
--- a/bellman/Cargo.toml
+++ b/bellman/Cargo.toml
@@ -7,6 +7,7 @@ license = "MIT/Apache-2.0"
 name = "bellman"
 repository = "https://github.com/ebfull/bellman"
 version = "0.1.0"
+edition = "2018"
 
 [dependencies]
 bit-vec = "0.4.4"
diff --git a/ff/Cargo.toml b/ff/Cargo.toml
index 212f6c4..93dfb9f 100644
--- a/ff/Cargo.toml
+++ b/ff/Cargo.toml
@@ -7,6 +7,7 @@ documentation = "https://docs.rs/ff/"
 homepage = "https://github.com/ebfull/ff"
 license = "MIT/Apache-2.0"
 repository = "https://github.com/ebfull/ff"
+edition = "2018"
 
 [dependencies]
 byteorder = "1"
diff --git a/ff/ff_derive/Cargo.toml b/ff/ff_derive/Cargo.toml
index 914e392..e822460 100644
--- a/ff/ff_derive/Cargo.toml
+++ b/ff/ff_derive/Cargo.toml
@@ -7,6 +7,7 @@ documentation = "https://docs.rs/ff/"
 homepage = "https://github.com/ebfull/ff"
 license = "MIT/Apache-2.0"
 repository = "https://github.com/ebfull/ff"
+edition = "2018"
 
 [lib]
 proc-macro = true
diff --git a/group/Cargo.toml b/group/Cargo.toml
index 7d2d531..2b09f09 100644
--- a/group/Cargo.toml
+++ b/group/Cargo.toml
@@ -11,6 +11,7 @@ description = "Elliptic curve group traits and utilities"
 documentation = "https://docs.rs/group/"
 homepage = "https://github.com/ebfull/group"
 repository = "https://github.com/ebfull/group"
+edition = "2018"
 
 [dependencies]
 ff = { path = "../ff" }
diff --git a/librustzcash/Cargo.toml b/librustzcash/Cargo.toml
index 3256d14..8290191 100644
--- a/librustzcash/Cargo.toml
+++ b/librustzcash/Cargo.toml
@@ -6,7 +6,8 @@ authors = [
     "Jack Grigg <jack@z.cash>",
     "Jay Graber <jay@z.cash>",
     "Simon Liu <simon@z.cash>"
-    ]
+]
+edition = "2018"
 
 [lib]
 name = "rustzcash"
diff --git a/pairing/Cargo.toml b/pairing/Cargo.toml
index 759fd3d..8fadb32 100644
--- a/pairing/Cargo.toml
+++ b/pairing/Cargo.toml
@@ -13,6 +13,7 @@ description = "Pairing-friendly elliptic curve library"
 documentation = "https://docs.rs/pairing/"
 homepage = "https://github.com/ebfull/pairing"
 repository = "https://github.com/ebfull/pairing"
+edition ="2018"
 
 [dependencies]
 byteorder = "1"
diff --git a/zcash_primitives/Cargo.toml b/zcash_primitives/Cargo.toml
index b3173b7..5e1bf91 100644
--- a/zcash_primitives/Cargo.toml
+++ b/zcash_primitives/Cargo.toml
@@ -4,6 +4,7 @@ version = "0.0.0"
 authors = [
     "Jack Grigg <jack@z.cash>",
 ]
+edition = "2018"
 
 [dependencies]
 aes = "0.3"