diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+# hpqtypes-1.9.0.1 (2020-09-04)
+* Remove upper bounds of dependencies.
+
 # hpqtypes-1.9.0.0 (2020-04-02)
 * Support GHC 8.8 and 8.10.
 
diff --git a/hpqtypes.cabal b/hpqtypes.cabal
--- a/hpqtypes.cabal
+++ b/hpqtypes.cabal
@@ -1,5 +1,5 @@
 name:                hpqtypes
-version:             1.9.0.0
+version:             1.9.0.1
 synopsis:            Haskell bindings to libpqtypes
 
 description:         Efficient and easy-to-use bindings to (slightly modified)
@@ -39,7 +39,7 @@
 category:            Database
 build-type:          Custom
 cabal-version:       1.24
-tested-with:         GHC ==8.0.2 || ==8.2.2 || ==8.4.4 || ==8.6.5 || ==8.8.1 || ==8.10.1
+tested-with:         GHC ==8.0.2 || ==8.2.2 || ==8.4.4 || ==8.6.5 || ==8.8.4 || ==8.10.2
 
 
 extra-source-files: README.md
@@ -70,7 +70,7 @@
                   , libpqtypes/src/libpqtypes.h
 
 custom-setup
-  setup-depends: base  >= 4.9  && < 4.15,
+  setup-depends: base  >= 4.9  && < 5,
                  Cabal >= 1.24 && < 3.3,
                  directory,
                  filepath
@@ -123,10 +123,10 @@
                      , Database.PostgreSQL.PQTypes.Internal.C.Interface
                      , Database.PostgreSQL.PQTypes.Internal.C.Get
 
-  build-depends:       base              >= 4.9     && < 4.15
-                     , text              >= 0.11    && < 1.3
-                     , aeson             >= 1.0     && < 1.5
-                     , async             >= 2.1.1.1 && < 2.3
+  build-depends:       base              >= 4.9     && < 5
+                     , text              >= 0.11
+                     , aeson             >= 1.0
+                     , async             >= 2.1.1.1
                      , bytestring        >= 0.9
                      , semigroups        >= 0.16
                      , time              >= 1.4
@@ -140,7 +140,7 @@
                      , containers        >= 0.5.0.0
                      , exceptions        >= 0.6
                      , text-show         >= 2
-                     , uuid-types        >= 1.0.3   && < 1.1
+                     , uuid-types        >= 1.0.3
 
   hs-source-dirs:    src
 
@@ -207,7 +207,7 @@
                      Test.QuickCheck.Compat
                      Test.QuickCheck.Arbitrary.Instances
   build-depends:       hpqtypes
-                     , base >= 4.9 && < 4.15
+                     , base >= 4.9 && < 5
                      , HUnit >= 1.2
                      , QuickCheck >= 2.5
                      , aeson >= 0.6.2.0