diff --git a/stack.yaml b/stack.yaml
index 23fb22b07..4c25d9c2e 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,4 +1,4 @@
-resolver: lts-16.26 # 2020-12-13, GHC 8.8.4
+resolver: lts-18.2 # 2021-07-10, GHC 8.10.4
 
 nix:
   packages:
@@ -10,8 +10,6 @@ nix:
   pure: false
 
 extra-deps:
-  - protolude-0.3.0@sha256:8361b811b420585b122a7ba715aa5923834db6e8c36309bf267df2dbf66b95ef,2693
-  - hasql-notifications-0.1.0.0@sha256:9ab112d2bb5da0d55abd65f0d27a7bb1dc4aeb792518d9a2ea8a16e243e19985,2156
   - hasql-dynamic-statements-0.3.1@sha256:c3a2c89c4a8b3711368dbd33f0ccfe46a493faa7efc2c85d3e354c56a01dfc48,2673
   - hasql-implicits-0.1.0.2@sha256:5d54e09cb779a209681b139fb3cc726bae75134557932156340cc0a56dd834a8,1361
-  - ptr-0.16.7.2@sha256:4a91e1342db8e627435a002798d65329a0c09c8632b2e415461b9928785327f9,2686
+  - ptr-0.16.8.1@sha256:525219ec5f5da5c699725f7efcef91b00a7d44120fc019878b85c09440bf51d6,2686
diff --git a/stack.yaml.lock b/stack.yaml.lock
index b0d652348..5c114fcae 100644
--- a/stack.yaml.lock
+++ b/stack.yaml.lock
@@ -4,20 +4,6 @@
 #   https://docs.haskellstack.org/en/stable/lock_files
 
 packages:
-- completed:
-    hackage: protolude-0.3.0@sha256:8361b811b420585b122a7ba715aa5923834db6e8c36309bf267df2dbf66b95ef,2693
-    pantry-tree:
-      size: 1644
-      sha256: babf32b414f25f790b7a4ce6bae5c960bc51a11a289e7c47335b222e6762560c
-  original:
-    hackage: protolude-0.3.0@sha256:8361b811b420585b122a7ba715aa5923834db6e8c36309bf267df2dbf66b95ef,2693
-- completed:
-    hackage: hasql-notifications-0.1.0.0@sha256:9ab112d2bb5da0d55abd65f0d27a7bb1dc4aeb792518d9a2ea8a16e243e19985,2156
-    pantry-tree:
-      size: 452
-      sha256: 3f5c51ec2bc7b58b5b6e8c871c8ed903a8dd1fbbb37cce9607407933d678e205
-  original:
-    hackage: hasql-notifications-0.1.0.0@sha256:9ab112d2bb5da0d55abd65f0d27a7bb1dc4aeb792518d9a2ea8a16e243e19985,2156
 - completed:
     hackage: hasql-dynamic-statements-0.3.1@sha256:c3a2c89c4a8b3711368dbd33f0ccfe46a493faa7efc2c85d3e354c56a01dfc48,2673
     pantry-tree:
@@ -33,15 +19,15 @@ packages:
   original:
     hackage: hasql-implicits-0.1.0.2@sha256:5d54e09cb779a209681b139fb3cc726bae75134557932156340cc0a56dd834a8,1361
 - completed:
-    hackage: ptr-0.16.7.2@sha256:4a91e1342db8e627435a002798d65329a0c09c8632b2e415461b9928785327f9,2686
+    hackage: ptr-0.16.8.1@sha256:525219ec5f5da5c699725f7efcef91b00a7d44120fc019878b85c09440bf51d6,2686
     pantry-tree:
       size: 1089
-      sha256: 061c2c8a357cb4d6a03c915dba627971a28460746dd47f662496ae4f2c91a6b6
+      sha256: d2b8440a738719ef8430ec38fe33b129e3940e4ccf2c016a727a1110a43656bb
   original:
-    hackage: ptr-0.16.7.2@sha256:4a91e1342db8e627435a002798d65329a0c09c8632b2e415461b9928785327f9,2686
+    hackage: ptr-0.16.8.1@sha256:525219ec5f5da5c699725f7efcef91b00a7d44120fc019878b85c09440bf51d6,2686
 snapshots:
 - completed:
-    size: 533252
-    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/16/26.yaml
-    sha256: cdbc5db9c1afe80a5998247939027a0c7db92fa0f20b5cd01596ec3da628b622
-  original: lts-16.26
+    size: 585392
+    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/18/2.yaml
+    sha256: 7abb45c0cc5eb349448b66d8753655542d45d387ad26970419282eab3d860724
+  original: lts-18.2