diff --git a/episode/10/checklink/Cargo.lock b/episode/10/checklink/Cargo.lock
index cbd13fd..5c2f584 100644
--- a/episode/10/checklink/Cargo.lock
+++ b/episode/10/checklink/Cargo.lock
@@ -295,9 +295,9 @@ dependencies = [
 
 [[package]]
 name = "futures-core"
-version = "0.3.5"
+version = "0.3.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "59f5fff90fd5d971f936ad674802482ba441b6f09ba5e15fd8b39145582ca399"
+checksum = "0c09fd04b7e4073ac7156a9539b57a484a8ea920f79c7c675d05d289ab6110d3"
 
 [[package]]
 name = "futures-cpupool"
@@ -311,9 +311,9 @@ dependencies = [
 
 [[package]]
 name = "futures-io"
-version = "0.3.5"
+version = "0.3.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "de27142b013a8e869c14957e6d2edeef89e97c289e69d042ee3a49acd8b51789"
+checksum = "fc4045962a5a5e935ee2fdedaa4e08284547402885ab326734432bed5d12966b"
 
 [[package]]
 name = "futures-sink"
@@ -323,24 +323,21 @@ checksum = "3f2032893cb734c7a05d85ce0cc8b8c4075278e93b24b66f9de99d6eb0fa8acc"
 
 [[package]]
 name = "futures-task"
-version = "0.3.5"
+version = "0.3.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bdb66b5f09e22019b1ab0830f7785bcea8e7a42148683f99214f73f8ec21a626"
-dependencies = [
- "once_cell",
-]
+checksum = "57c66a976bf5909d801bbef33416c41372779507e7a6b3a5e25e4749c58f776a"
 
 [[package]]
 name = "futures-util"
-version = "0.3.5"
+version = "0.3.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8764574ff08b701a084482c3c7031349104b07ac897393010494beaa18ce32c6"
+checksum = "d8b7abd5d659d9b90c8cba917f6ec750a74e2dc23902ef9cd4cc8c8b22e6036a"
 dependencies = [
  "futures-core",
  "futures-io",
  "futures-task",
  "memchr",
- "pin-project",
+ "pin-project-lite 0.2.9",
  "pin-utils",
  "slab",
 ]
@@ -813,12 +810,6 @@ version = "0.20.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1ab52be62400ca80aa00285d25253d7f7c437b7375c4de678f5405d3afe82ca5"
 
-[[package]]
-name = "once_cell"
-version = "1.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0b631f7e854af39a1739f401cf34a8a013dfe09eac4fa4dba91e9768bd28168d"
-
 [[package]]
 name = "openssl"
 version = "0.10.30"
@@ -910,6 +901,12 @@ version = "0.1.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "282adbf10f2698a7a77f8e983a74b2d18176c19a7fd32a45446139ae7b02b715"
 
+[[package]]
+name = "pin-project-lite"
+version = "0.2.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e0a7ae3ac2f1173085d398531c705756c94a4c56843785df85a60c1a0afac116"
+
 [[package]]
 name = "pin-utils"
 version = "0.1.0"
@@ -1054,7 +1051,7 @@ dependencies = [
  "mime_guess",
  "native-tls",
  "percent-encoding",
- "pin-project-lite",
+ "pin-project-lite 0.1.7",
  "serde",
  "serde_urlencoded",
  "tokio 0.2.21",
@@ -1343,7 +1340,7 @@ dependencies = [
  "memchr",
  "mio",
  "num_cpus",
- "pin-project-lite",
+ "pin-project-lite 0.1.7",
  "slab",
 ]
 
@@ -1567,7 +1564,7 @@ dependencies = [
  "futures-core",
  "futures-sink",
  "log",
- "pin-project-lite",
+ "pin-project-lite 0.1.7",
  "tokio 0.2.21",
 ]