diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,11 @@
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to the [Haskell Package Versioning Policy](https://pvp.haskell.org/).
 
+## [0.2.0.1] - 2020-12-20
+
+### Changed
+- Marked dejafu test suite as "not buildable" by default
+
 ## [0.2.0] - 2020-12-17
 
 ### Changed
diff --git a/ki.cabal b/ki.cabal
--- a/ki.cabal
+++ b/ki.cabal
@@ -11,7 +11,7 @@
 name: ki
 stability: experimental
 synopsis: A lightweight, structured-concurrency library
-version: 0.2.0
+version: 0.2.0.1
 
 description:
   A lightweight, structured-concurrency library.
@@ -87,7 +87,7 @@
       -Wno-missing-safe-haskell-mode
       -Wno-prepositive-qualified-module
 
-flag test
+flag dejafu-tests
   description: Internal flag used by DejaFu test suite
   default: False
   manual: True
@@ -96,8 +96,10 @@
   import: component
   build-depends:
     base >= 4.12.0.0 && < 4.15,
-    containers,
-    stm
+    containers
+  if !flag(dejafu-tests)
+    build-depends:
+      stm
   exposed-modules:
     Ki,
     Ki.Implicit,
@@ -114,7 +116,7 @@
     Ki.Scope
     Ki.Thread
     Ki.Timeout
-  if flag(test)
+  if flag(dejafu-tests)
     build-depends:
       concurrency ^>= 1.11.0.0,
       dejafu ^>= 2.4.0.0,
@@ -122,6 +124,10 @@
 
 test-suite dejafu-tests
   import: component
+  if flag(dejafu-tests)
+    buildable: True
+  else
+    buildable: False
   build-depends:
     base,
     concurrency,
@@ -136,6 +142,10 @@
 
 test-suite unit-tests
   import: component
+  if flag(dejafu-tests)
+    buildable: False
+  else
+    buildable: True
   build-depends:
     base,
     ki,