diff --git a/reflex-dom-core/reflex-dom-core.cabal b/reflex-dom-core/reflex-dom-core.cabal
index 75b082c..c62eba9 100644
--- a/reflex-dom-core/reflex-dom-core.cabal
+++ b/reflex-dom-core/reflex-dom-core.cabal
@@ -1,3 +1,4 @@
+cabal-version: 1.24
 Name: reflex-dom-core
 Version: 0.6.0.0
 Synopsis: Functional Reactive Web Apps with Reflex
@@ -15,7 +16,6 @@ Maintainer: ryan.trinkle@gmail.com
 Stability: Experimental
 Category: FRP, Web, GUI, HTML, Javascript, Reactive, Reactivity, User Interfaces, User-interface
 Build-type: Simple
-Cabal-version: >=1.9.2
 -- Deal with https://github.com/haskell/cabal/issues/2544 / https://github.com/haskell/cabal/issues/367
 extra-source-files: src-ghc/Foreign/JavaScript/Internal/Utils.hs
                     src-ghcjs/Foreign/JavaScript/Internal/Utils.hs
@@ -139,6 +139,7 @@ library
     Reflex.Dom.Xhr.ResponseType
     Reflex.Dom.Xhr.Exception
 
+  default-language: Haskell98
   ghc-options: -Wall -fwarn-tabs -funbox-strict-fields -O2 -ferror-spans -fspecialise-aggressively
   ghc-prof-options: -fprof-auto
 
@@ -165,6 +166,7 @@ test-suite hlint
   hs-source-dirs: test
   main-is: hlint.hs
   type: exitcode-stdio-1.0
+  default-language: Haskell98
 
 test-suite hydration
   build-depends: base
@@ -211,6 +213,7 @@ test-suite hydration
   ghc-prof-options: -fprof-auto -optP-DPROFILING
   main-is: hydration.hs
   type: exitcode-stdio-1.0
+  default-language: Haskell98
   if !os(linux) || !arch(x86_64) || flag(profile-reflex)
     buildable: False
 
@@ -230,6 +233,7 @@ test-suite gc
   ghc-prof-options: -fprof-auto -optP-DPROFILING
   main-is: gc.hs
   type: exitcode-stdio-1.0
+  default-language: Haskell98
   if !os(linux) || !arch(x86_64)
     buildable: False
 
diff --git a/reflex-dom/reflex-dom.cabal b/reflex-dom/reflex-dom.cabal
index b741502..a2fe668 100644
--- a/reflex-dom/reflex-dom.cabal
+++ b/reflex-dom/reflex-dom.cabal
@@ -1,3 +1,4 @@
+cabal-version: 1.24
 Name: reflex-dom
 Version: 0.6.0.0
 Synopsis: Functional Reactive Web Apps with Reflex
@@ -17,7 +18,6 @@ Maintainer: ryan.trinkle@gmail.com
 Stability: Experimental
 Category: FRP, Web, GUI, HTML, Javascript, Reactive, Reactivity, User Interfaces, User-interface
 Build-type: Simple
-cabal-version: >=1.24
 extra-source-files:
   java/org/reflexfrp/reflexdom/MainWidget.java
   ChangeLog.md
@@ -46,6 +46,11 @@ flag build-examples
   default: False
   manual: True
 
+flag wasm32
+  description: Build for wasm32 architecture
+  default: False
+  manual: True
+
 library
   hs-source-dirs: src
   if os(android)
@@ -79,7 +84,7 @@ library
           jsaddle >= 0.9.6 && < 0.10,
           jsaddle-wkwebview >= 0.9.6 && < 0.10
       else
-        if arch(wasm32)
+        if flag(wasm32)
           build-depends:
             jsaddle >= 0.9.6 && < 0.10,
             jsaddle-wasm >= 0.1 && < 0.2