diff --git a/src/Data/Swagger/Declare.hs b/src/Data/Swagger/Declare.hs
index 24e57f2..bab2c2f 100644
--- a/src/Data/Swagger/Declare.hs
+++ b/src/Data/Swagger/Declare.hs
@@ -162,10 +162,6 @@ instance MonadDeclare d m => MonadDeclare d (IdentityT m) where
   declare = lift . declare
   look = lift look
 
-instance MonadDeclare d m => MonadDeclare d (ListT m) where
-  declare = lift . declare
-  look = lift look
-
 instance MonadDeclare d m => MonadDeclare d (MaybeT m) where
   declare = lift . declare
   look = lift look
diff --git a/stack.yaml b/stack.yaml
index 9e03563..b6fecb6 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,9 +1,9 @@
-resolver: lts-14.3
+resolver: lts-15.1
 packages:
 - '.'
 extra-deps:
-- optics-core-0.2
-- optics-th-0.2
-- optics-extra-0.2
+- optics-core-0.3
+- optics-th-0.3
+- optics-extra-0.3
 - indexed-profunctors-0.1
-- insert-ordered-containers-0.2.3
+- insert-ordered-containers-0.2.3.1
diff --git a/swagger2.cabal b/swagger2.cabal
index 586d014..8940c61 100644
--- a/swagger2.cabal
+++ b/swagger2.cabal
@@ -29,6 +29,7 @@ tested-with:
    || ==8.4.4
    || ==8.6.5
    || ==8.8.1
+   || ==8.10.1
 
 custom-setup
   setup-depends:
@@ -60,10 +61,10 @@ library
 
   -- GHC boot libraries
   build-depends:
-      base             >=4.9      && <4.14
+      base             >=4.9      && <4.15
     , bytestring       >=0.10.4.0 && <0.11
     , containers       >=0.5.5.1  && <0.7
-    , template-haskell >=2.9.0.0  && <2.16
+    , template-haskell >=2.9.0.0  && <2.17
     , time             >=1.4.2    && <1.10
     , transformers     >=0.3.0.0  && <0.6
 
@@ -82,10 +83,10 @@ library
     , hashable                  >=1.2.7.0  && <1.4
     , http-media                >=0.7.1.2  && <0.9
     , insert-ordered-containers >=0.2.3    && <0.3
-    , lens                      >=4.16.1   && <4.19
+    , lens                      >=4.16.1   && <4.20
     , network                   >=2.6.3.5  && <3.2
-    , optics-core               >=0.2      && <0.3
-    , optics-th                 >=0.2      && <0.3
+    , optics-core               >=0.2      && <0.4
+    , optics-th                 >=0.2      && <0.4
     , scientific                >=0.3.6.2  && <0.4
     , transformers-compat       >=0.3      && <0.7
     , unordered-containers      >=0.2.9.0  && <0.3