@@ -154,7 +154,8 @@ library
154154
155155 if flag(debug-trace-events)
156156 cpp-options: -DDEBUG_TRACE_EVENTS
157− build-depends: bytestring
157+ build-depends:
158+ bytestring >= 0.10.8 && < 0.11
158159
159160 if flag(use-reflex-optimizer)
160161 cpp-options: -DUSE_REFLEX_OPTIMIZER
@@ -185,7 +186,8 @@ library
185186 cpp-options: -DGHCJS_FAST_WEAK
186187
187188 if impl(ghcjs)
188− build-depends: ghcjs-base
189+ build-depends:
190+ ghcjs-base == 0.2.*
189191
190192test-suite semantics
191193 default-language: Haskell2010