diff --git a/Cargo.lock b/Cargo.lock
index 1c65c247..21215813 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -319,7 +319,7 @@ dependencies = [
  "errors 0.1.0",
  "front_matter 0.1.0",
  "globset 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rayon 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rayon 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rendering 0.1.0",
  "serde 1.0.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "slug 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -941,7 +941,7 @@ dependencies = [
  "errors 0.1.0",
  "image 0.19.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "rayon 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rayon 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "tera 0.11.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "utils 0.1.0",
@@ -1000,7 +1000,7 @@ version = "0.1.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "byteorder 1.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "rayon 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rayon 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1325,7 +1325,7 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "num-traits 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "proc-macro2 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 0.14.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1564,7 +1564,7 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "0.4.6"
+version = "0.4.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1602,7 +1602,7 @@ name = "quote"
 version = "0.6.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1627,23 +1627,23 @@ dependencies = [
 
 [[package]]
 name = "rayon"
-version = "1.0.1"
+version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
+ "crossbeam-deque 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "either 1.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rayon-core 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rayon-core 1.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "rayon-core"
-version = "1.4.0"
+version = "1.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "crossbeam-deque 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.42 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1912,7 +1912,7 @@ name = "serde_derive"
 version = "1.0.70"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 0.14.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1970,7 +1970,7 @@ dependencies = [
  "glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "imageproc 0.1.0",
  "pagination 0.1.0",
- "rayon 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rayon 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "sass-rs 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "search 0.1.0",
  "serde 1.0.70 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2097,7 +2097,7 @@ name = "strum_macros"
 version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 0.14.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -2127,7 +2127,7 @@ name = "syn"
 version = "0.14.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -2939,7 +2939,7 @@ dependencies = [
 "checksum png 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f54b9600d584d3b8a739e1662a595fab051329eff43f20e7d8cc22872962145b"
 "checksum precomputed-hash 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "925383efa346730478fb4838dbe9137d2a47675ad789c546d150a6e1dd4ab31c"
 "checksum proc-macro2 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "1b06e2f335f48d24442b35a19df506a835fb3547bc3c06ef27340da9acf5cae7"
-"checksum proc-macro2 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "effdb53b25cdad54f8f48843d67398f7ef2e14f12c1b4cb4effc549a6462a4d6"
+"checksum proc-macro2 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)" = "c65b1ea15bb859d922cade2d1765b4b88beac339cbfad545ef2d2ef8c8215ee6"
 "checksum pulldown-cmark 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "d6fdf85cda6cadfae5428a54661d431330b312bc767ddbc57adbedc24da66e32"
 "checksum quick-error 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "9274b940887ce9addde99c4eee6b5c44cc494b182b97e73dc8ffdcb3397fd3f0"
 "checksum quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6e920b65c65f10b2ae65c831a81a073a89edd28c7cce89475bff467ab4167a"
@@ -2947,8 +2947,8 @@ dependencies = [
 "checksum quote 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)" = "e44651a0dc4cdd99f71c83b561e221f714912d11af1a4dff0631f923d53af035"
 "checksum rand 0.3.22 (registry+https://github.com/rust-lang/crates.io-index)" = "15a732abf9d20f0ad8eeb6f909bf6868722d9a06e1e50802b6a70351f40b4eb1"
 "checksum rand 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "eba5f8cb59cc50ed56be8880a5c7b496bfd9bd26394e176bc67884094145c2c5"
-"checksum rayon 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "80e811e76f1dbf68abf87a759083d34600017fc4e10b6bd5ad84a700f9dba4b1"
-"checksum rayon-core 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9d24ad214285a7729b174ed6d3bcfcb80177807f959d95fafd5bfc5c4f201ac8"
+"checksum rayon 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "df7a791f788cb4c516f0e091301a29c2b71ef680db5e644a7d68835c8ae6dbfa"
+"checksum rayon-core 1.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b055d1e92aba6877574d8fe604a63c8b5df60f60e5982bf7ccbb1338ea527356"
 "checksum redox_syscall 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)" = "c214e91d3ecf43e9a4e41e578973adeb14b474f2bee858742d127af75a0112b1"
 "checksum redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7e891cfe48e9100a70a3b6eb652fef28920c117d366339687bd5576160db0f76"
 "checksum regex 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "9329abc99e39129fcceabd24cf5d85b4671ef7c29c50e972bc5afe32438ec384"
diff --git a/appveyor.yml b/appveyor.yml
index f39c6a8f..1f6418e7 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -10,7 +10,7 @@ environment:
 
   matrix:
     - target: x86_64-pc-windows-msvc
-      RUST_VERSION: 1.25.0
+      RUST_VERSION: 1.27.0
     - target: x86_64-pc-windows-msvc
       RUST_VERSION: stable