diff --git a/sledge/bin/dune b/sledge/bin/dune
index 6ebae77b3..3fdd8e2a1 100644
--- a/sledge/bin/dune
+++ b/sledge/bin/dune
@@ -6,9 +6,9 @@
 (executable
  (public_name sledge)
  (package sledge)
- (libraries dune-build-info llvm llvm.irreader llvm.analysis llvm.scalar_opts
-   llvm.target llvm.ipo llvm.linker shexp.process yojson trace import
-   sledgelib model)
+ (libraries ctypes ctypes.foreign dune-build-info llvm llvm.irreader
+   llvm.analysis llvm.scalar_opts llvm.target llvm.ipo llvm.linker
+   shexp.process yojson trace import sledgelib model)
  (flags
   (:standard -open Import -open Sledgelib -open Model))
  (preprocess
diff --git a/sledge/lib/dune b/sledge/lib/dune
index 86e292d3a..71f66145c 100644
--- a/sledge/lib/dune
+++ b/sledge/lib/dune
@@ -5,7 +5,7 @@
 
 (library
  (name sledgelib)
- (libraries apron apron.boxMPQ ctypes ctypes.foreign trace import)
+ (libraries apron apron.boxMPQ trace import)
  (flags
   (:standard -open Import))
  (preprocess