diff --git a/Cargo.lock b/Cargo.lock
index 67eccc5..39947ec 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -30,8 +30,8 @@ dependencies = [
 name = "econf-derive"
 version = "0.2.1"
 dependencies = [
- "proc-macro2",
- "quote",
+ "proc-macro2 0.4.30",
+ "quote 1.0.36",
  "syn",
 ]
 
@@ -87,13 +87,31 @@ dependencies = [
  "unicode-xid",
 ]
 
+[[package]]
+name = "proc-macro2"
+version = "1.0.86"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5e719e8df665df0d1c8fbfd238015744736151d4445ec0836b8e628aae103b77"
+dependencies = [
+ "unicode-ident",
+]
+
 [[package]]
 name = "quote"
 version = "0.6.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6ce23b6b870e8f94f81fb0a363d65d86675884b34a09043c81e5562f11c1f8e1"
 dependencies = [
- "proc-macro2",
+ "proc-macro2 0.4.30",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.36"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0fa76aaf39101c457836aec0ce2316dbdc3ab723cdda1c6bd4e6ad4208acaca7"
+dependencies = [
+ "proc-macro2 1.0.86",
 ]
 
 [[package]]
@@ -136,8 +154,8 @@ version = "0.15.44"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9ca4b3b69a77cbe1ffc9e198781b7acb0c7365a883670e8f1c1bc66fba79a5c5"
 dependencies = [
- "proc-macro2",
- "quote",
+ "proc-macro2 0.4.30",
+ "quote 0.6.13",
  "unicode-xid",
 ]
 
@@ -152,6 +170,12 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "unicode-ident"
+version = "1.0.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
+
 [[package]]
 name = "unicode-xid"
 version = "0.1.0"
diff --git a/econf-derive/Cargo.toml b/econf-derive/Cargo.toml
index 2307a88..3e821f8 100644
--- a/econf-derive/Cargo.toml
+++ b/econf-derive/Cargo.toml
@@ -12,7 +12,7 @@ readme = "README.md"
 
 [dependencies]
 syn = "0.15"
-quote = "0.6"
+quote = "1.0"
 proc-macro2 = "0.4"
 
 [lib]