diff --git a/Makefile b/Makefile
index bbb4c494b..2214436c5 100644
--- a/Makefile
+++ b/Makefile
@@ -7,7 +7,7 @@ GHCOPTS=-fdiagnostics-color=always
 WEBSITE=../../web/pandoc.org
 
 quick:
-	stack install --ghc-options='$(GHCOPTS)' --install-ghc --flag 'pandoc:embed_data_files' --fast --test --test-arguments='-j4 --hide-successes $(TESTARGS)'
+	stack install --ghc-options='$(GHCOPTS)' --install-ghc --flag 'pandoc:embed_data_files' --fast --test --ghc-options='-j +RTS -A64m -RTS' --test-arguments='-j4 --hide-successes $(TESTARGS)'
 
 quick-cabal:
 	cabal new-configure . --ghc-options '$(GHCOPTS)' --disable-optimization --enable-tests
diff --git a/cabal.project b/cabal.project
index 7248521ff..35c11c90c 100644
--- a/cabal.project
+++ b/cabal.project
@@ -2,11 +2,11 @@ packages: pandoc.cabal
 
 package pandoc
   flags: +embed_data_files -trypandoc
-  ghc-options: -j +RTS -A32M -RTS
+  ghc-options: -j +RTS -A64m -RTS
 
 package pandoc-citeproc
   flags: +embed_data_files +bibutils -unicode_collation -test_citeproc -debug
-  ghc-options: -j +RTS -A32M -RTS
+  ghc-options: -j +RTS -A64m -RTS
 
 source-repository-package
     type: git