diff --git a/fpco-api.cabal b/fpco-api.cabal
--- a/fpco-api.cabal
+++ b/fpco-api.cabal
@@ -1,5 +1,5 @@
 name:          fpco-api
-version:       1.2.0
+version:       1.2.0.1
 synopsis:      Simple interface to the FP Complete IDE API.
 description:   A server and library for communicating with the FP Complete IDE API.
 homepage:      https://www.fpcomplete.com/page/api
@@ -19,11 +19,7 @@
     default: False
 
 library
-    ghc-options: -Wall -fwarn-incomplete-record-updates
-    if flag(dev)
-        ghc-options: -O0
-    else
-        ghc-options: -O2
+    ghc-options: -Wall -fwarn-incomplete-record-updates -O0
     default-language: Haskell2010
     hs-source-dirs:   src/library
     exposed-modules:
@@ -92,7 +88,7 @@
 executable fpco-api
     if flag(jenkins-build)
       buildable: False
-    ghc-options:        -Wall -fwarn-incomplete-record-updates -threaded -O2
+    ghc-options:        -Wall -fwarn-incomplete-record-updates -threaded -O0
     main-is:            Main.hs
     default-extensions: CPP
     hs-source-dirs:     src/executables