diff --git a/json-alt/json-alt.cabal b/json-alt/json-alt.cabal
index 86a62a0..a243c6d 100644
--- a/json-alt/json-alt.cabal
+++ b/json-alt/json-alt.cabal
@@ -1,12 +1,11 @@
 cabal-version: 1.12
 
--- This file has been generated from package.yaml by hpack version 0.34.4.
+-- This file has been generated from package.yaml by hpack version 0.34.5.
 --
 -- see: https://github.com/sol/hpack
---
 
 name:                json-alt
-version:             1.0.1
+version:             1.0.0
 synopsis:            Union 'alternative' or Either that has untagged JSON encoding.
 description:         Parsing JSON with Aeson often requires decoding fields
                      that have more than one Haskell type.
diff --git a/json-autotype/json-autotype.cabal b/json-autotype/json-autotype.cabal
index 8ed6199..1898388 100644
--- a/json-autotype/json-autotype.cabal
+++ b/json-autotype/json-autotype.cabal
@@ -1,11 +1,11 @@
 cabal-version: 1.12
 
--- This file has been generated from package.yaml by hpack version 0.34.4.
+-- This file has been generated from package.yaml by hpack version 0.34.5.
 --
 -- see: https://github.com/sol/hpack
 
 name:                json-autotype
-version:             3.1.3
+version:             3.1.2
 synopsis:            Automatic type declaration for JSON input data
 description:         Generates datatype declarations with Aeson''s ''Data.Aeson.FromJSON''
                      .
@@ -124,7 +124,7 @@ library
     , process >=1.1 && <1.7
     , run-haskell-module
     , scientific >=0.3 && <0.5
-    , smallcheck >=1.0 && <1.2
+    , smallcheck <1.3
     , template-haskell
     , text >=1.1 && <1.4
     , uniplate ==1.6.*
diff --git a/json-autotype/package.yaml b/json-autotype/package.yaml
index 5c59f70..9c02a87 100644
--- a/json-autotype/package.yaml
+++ b/json-autotype/package.yaml
@@ -109,7 +109,7 @@ library:
   - Data.Aeson.AutoType.Nested
   dependencies:
   - data-default >=0.7 && <0.8
-  - smallcheck >=1.0 && <1.2
+  - smallcheck < 1.3
   - QuickCheck >=2.4 && <3.0
   - run-haskell-module
 executables:
diff --git a/stack.yaml b/stack.yaml
index 95ddc72..1fe0db9 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,4 +1,5 @@
-resolver: lts-12.26
+resolver: lts-17.2
+compiler: ghc-8.10.7
 
 packages:
 - json-autotype
diff --git a/stack.yaml.lock b/stack.yaml.lock
index 4733614..e349d29 100644
--- a/stack.yaml.lock
+++ b/stack.yaml.lock
@@ -13,7 +13,7 @@ packages:
     hackage: GenericPretty-1.2.2
 snapshots:
 - completed:
-    size: 509471
-    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/12/26.yaml
-    sha256: 95f014df58d0679b1c4a2b7bf2b652b61da8d30de5f571abb0d59015ef678646
-  original: lts-12.26
+    size: 563099
+    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/17/2.yaml
+    sha256: 92b1a17e31d0a978fca4bf270305d4d1dd8092271bf60eafbc9349c890854026
+  original: lts-17.2