diff --git a/stack-8.10.6.yaml b/stack-8.10.6.yaml
index 3e4d56d2cd..2675a9bbdc 100644
--- a/stack-8.10.6.yaml
+++ b/stack-8.10.6.yaml
@@ -1,4 +1,4 @@
-resolver: nightly-2021-06-14
+resolver: lts-18.7
 compiler: ghc-8.10.6
 
 packages:
@@ -31,42 +31,23 @@ ghc-options:
   "$everything": -haddock
 
 extra-deps:
-  - apply-refact-0.9.3.0
-  - brittany-0.13.1.2
-  - Cabal-3.0.2.0
-  - clock-0.7.2
-  - data-tree-print-0.1.0.2@rev:2
-  - floskell-0.10.5
-  - fourmolu-0.3.0.0
-  - # ghc-api-compat-8.6
-    github: hsyl20/ghc-api-compat
-    commit: 8fee87eac97a538dbe81ff1ab18cff10f2f9fa15
-  - ghc-check-0.5.0.4
-  - ghc-exactprint-0.6.4
-  - ghc-source-gen-0.4.1.0
-  - heapsize-0.3.0
-  - implicit-hie-cradle-0.3.0.5
-  - implicit-hie-0.1.2.6
-  - monad-dijkstra-0.1.1.2
-  # For stylish-haskell-0.12.2.0
-  - optparse-applicative-0.15.1.0
-  - refinery-0.4.0.0
-  - retrie-1.0.0.0
-  - stylish-haskell-0.12.2.0
-  - semigroups-0.18.5
-  - temporary-1.2.1.1
-  - th-compat-0.1.2@sha256:3d55de1adc542c1a870c9ada90da2fbbe5f4e8bcd3eed545a55c3df9311b32a8,2854
-  - bytestring-encoding-0.1.0.0@sha256:460b49779fbf0112e8e2f1753c1ed9131eb18827600c298f4d6bb51c4e8c1c0d,1727
-  - hiedb-0.4.0.0
-  - dependent-map-0.4.0.0@sha256:ca2b131046f4340a1c35d138c5a003fe4a5be96b14efc26291ed35fd08c62221,1657
-  - dependent-sum-0.7.1.0@sha256:5599aa89637db434431b1dd3fa7c34bc3d565ee44f0519bfbc877be1927c2531,2068
-  - dependent-sum-template-0.1.0.3@sha256:0bbbacdfbd3abf2a15aaf0cf2c27e5bdd159b519441fec39e1e6f2f54424adde,1682
-  - constraints-extras-0.3.1.0
-  - some-1.0.1@sha256:26e5bab7276f48b25ea8660d3fd1166c0f20fd497dac879a40f408e23211f93e,2055
-  - unliftio-core-0.2.0.1@sha256:9b3e44ea9aacacbfc35b3b54015af450091916ac3618a41868ebf6546977659a,1082
-  - lsp-1.2.0.1
-  - lsp-types-1.3.0.1
-  - lsp-test-0.14.0.1
+  - brittany-0.13.1.2@sha256:9922614f1df18c63755a37c144033988788e0769fd9c2630b64ed0dfb49462bd,8197
+  - bytestring-encoding-0.1.1.0@sha256:1c3b97eb6345fd7153006211c8272215cd78bb0cf440c41185290822f1e3f2c2,1738
+  - data-tree-print-0.1.0.2@sha256:d845e99f322df70e0c06d6743bf80336f5918d5423498528beb0593a2afc1703,1620
+  - floskell-0.10.5@sha256:77f0bc1569573d9666b10975a5357fef631d32266c071733739393ccae521dab,3803
+  - ghc-api-compat-8.10.6@sha256:cde370b1b4c8a090de1ba6a8e27f65def9af43ca88710b412a6545b876568626,3324
+  - heapsize-0.3.0.1@sha256:0b69aa97a46d819b700ac7b145f3b5493c3565cf2c5b8298682238d405d0326e,1417
+  - hiedb-0.4.0.0@sha256:b6dadd5cefc8c1052bc4b29144f616ca9c22e863a96d8e447d66a4d32c96fd4a,2987
+  - implicit-hie-0.1.2.6@sha256:f50a908979a574a881f753c0f9a5224f023f438b30fdefc5b7fa01803b07a280,2998
+  - implicit-hie-cradle-0.3.0.5@sha256:5f5e575f549b2a9db664be7650b5c3c9226e313bddc46c79e2e83eb349f8e692,2610
+  - lsp-1.2.0.1@sha256:5b37d26fcbf037434e257e953c08513d4cb125ed784d4611038905c72dc0f58c,5431
+  - lsp-test-0.14.0.1@sha256:efce2ddec4183390341db7667e63936954c654a14d809ad7b61e4010a2fde97e,4739
+  - lsp-types-1.3.0.1@sha256:1dc41eb358345c1927fb8f285e7d951869623fe5b695fbbecf2fe6a3cee9fcfd,4646
+  - monad-dijkstra-0.1.1.3@sha256:d2fc098d7c122555e726830a12ae0423ac187f89de9228f32e56e2f6fc2238e1,1900
+  - optparse-applicative-0.15.1.0@sha256:29ff6146aabf54d46c4c8788e8d1eadaea27c94f6d360c690c5f6c93dac4b07e,4810
+  - refinery-0.4.0.0@sha256:fe3a43add8ff1db5cfffee7e7694c86128b1dfe62c541f26e25a8eadf9585610,1663
+  - retrie-1.0.0.0@sha256:82014773115807f649f60fe4a3246911bbccd063a3c846cf5665e71f237bdd2d,4241
+  - stylish-haskell-0.12.2.0@sha256:38f7fd9ca30c9aad34f176dae4564576899e9c197b6b8557b59c5e8c6a622c74,6108
 
   # Enable these when supported by all formatters
   # - ghc-lib-9.0.1.20210324@sha256:c8b9a2541ea3424c8d0e4f80584477d0f35be03f4a47d931152042d5f446c5fc,19279