diff --git a/sexpr-parser.cabal b/sexpr-parser.cabal
--- a/sexpr-parser.cabal
+++ b/sexpr-parser.cabal
@@ -1,5 +1,5 @@
 name:                   sexpr-parser
-version:                0.1.1.1
+version:                0.1.1.2
 synopsis:               Simple s-expression parser
 description:
   This package provides a simple Megaparsec-based s-expression parser.
@@ -22,9 +22,8 @@
     , Text.SExpression.Internal
     , Text.SExpression.Types
   build-depends:
-      base >= 4.7 && < 5
-    , megaparsec
-    , parsec
+      base              >= 4.8 && < 5
+    , megaparsec        >= 6.5 && < 8
 
 test-suite sexpr-parser-spec
   type:                 exitcode-stdio-1.0
@@ -34,9 +33,9 @@
   other-modules:
       Text.SExpression.InternalSpec
   build-depends:
-      base >= 4.7 && < 5
-    , hspec
-    , megaparsec
+      base              >= 4.8 && < 5
+    , hspec             >= 2.5 && < 3
+    , megaparsec        >= 6.5 && < 8
     , sexpr-parser
 
 executable sexpr-parser-z3-demo
@@ -44,8 +43,8 @@
   hs-source-dirs:       z3-demo
   main-is:              Main.hs
   build-depends:
-      base >= 4.7 && < 5
-    , bytestring
-    , megaparsec
-    , process
+      base              >= 4.8 && < 5
+    , bytestring        >= 0.10 && < 1
+    , megaparsec        >= 6.5 && < 8
+    , process           >= 1.6 && < 2
     , sexpr-parser