diff --git a/bytecount-0.2.0-fix-metadata.diff b/bytecount-0.2.0-fix-metadata.diff
index 6c2bcb6..e84b7fb 100644
--- a/bytecount-0.2.0-fix-metadata.diff
+++ b/bytecount-0.2.0-fix-metadata.diff
@@ -1,5 +1,5 @@
 --- bytecount-0.2.0/Cargo.toml	1970-01-01T01:00:00+01:00
-+++ bytecount-0.2.0/Cargo.toml	2017-12-31T18:58:03.975608+01:00
++++ bytecount-0.2.0/Cargo.toml	2017-12-31T18:58:51.977027+01:00
 @@ -26,21 +26,16 @@
  name = "bench"
  path = "benches/bench.rs"
@@ -12,7 +12,7 @@
  
  [dev-dependencies.quickcheck]
 -version = "0.4.1"
-+version = "0.5"
++version = "0.6"
  
  [dev-dependencies.rand]
 -version = "0.3.16"
diff --git a/rust-bytecount.spec b/rust-bytecount.spec
index 3b33c01..ed01f75 100644
--- a/rust-bytecount.spec
+++ b/rust-bytecount.spec
@@ -14,7 +14,7 @@ URL:            https://crates.io/crates/bytecount
 Source0:        https://crates.io/api/v1/crates/%{crate}/%{version}/download#/%{crate}-%{version}.crate
 # Initial patched metadata
 # * No simd
-# * Bump quickcheck to 0.5, https://github.com/llogiq/bytecount/pull/28
+# * Bump quickcheck to 0.6, https://github.com/llogiq/bytecount/pull/34
 # * Bump rand to 0.4, https://github.com/llogiq/bytecount/pull/33
 Patch0:         bytecount-0.2.0-fix-metadata.diff
 
@@ -24,7 +24,7 @@ BuildRequires:  rust-packaging
 %if %{with check}
 # [dev-dependencies]
 BuildRequires:  (crate(bencher) >= 0.1.4 with crate(bencher) < 0.2.0)
-BuildRequires:  (crate(quickcheck) >= 0.5.0 with crate(quickcheck) < 0.6.0)
+BuildRequires:  (crate(quickcheck) >= 0.6.0 with crate(quickcheck) < 0.7.0)
 BuildRequires:  (crate(rand) >= 0.4.0 with crate(rand) < 0.5.0)
 %endif
 
@@ -65,6 +65,7 @@ which use %{crate} from crates.io.
 %changelog
 * Sun Dec 31 2017 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.2.0-3
 - Bump rand to 0.4
+- Bump quickcheck to 0.6
 
 * Sat Dec 02 2017 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.2.0-2
 - Bump quickcheck to 0.5