diff --git a/README.md b/README.md
index 90dcaf0..c498859 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,6 @@ To build and run this you will need:
 * protoc
 * The following OPAM packages:
 	* ocaml-protoc-plugin
-	* hexstring
 	* base64
 
 To massively simplify this, simply run ```scripts/build-all.sh``` in your preferred install directory. This script assumes a completely fresh Ubuntu 20.04.5 installation. It is advised to run this script within a fresh VM but it should work on established installations. A complete installation can take several hours and will prompt for the sudo password at least once.
diff --git a/dune-project b/dune-project
index ae72e1a..a4e8e13 100644
--- a/dune-project
+++ b/dune-project
@@ -19,7 +19,7 @@
  (name gtirb_semantics)
  (synopsis "Add semantic information to the IR of a disassembled ARM64 binary")
  (description "A longer description")
- (depends ocaml dune yojson asli ocaml-protoc-plugin hexstring base64 ctypes ctypes-foreign conf-llvm)
+ (depends ocaml dune yojson asli ocaml-protoc-plugin base64 ctypes ctypes-foreign conf-llvm)
  (tags
   (decompilers instruction-lifters static-analysis)))
 
diff --git a/gtirb_semantics.opam b/gtirb_semantics.opam
index 3892802..b3200dc 100644
--- a/gtirb_semantics.opam
+++ b/gtirb_semantics.opam
@@ -15,7 +15,6 @@ depends: [
   "yojson"
   "asli"
   "ocaml-protoc-plugin"
-  "hexstring"
   "base64"
   "ctypes"
   "ctypes-foreign"
diff --git a/lib/dune b/lib/dune
index 5760f8b..58670e7 100644
--- a/lib/dune
+++ b/lib/dune
@@ -1,6 +1,6 @@
 (library
  (name gtirb_semantics)
- (libraries ocaml-protoc-plugin asli.libASL hexstring base64))
+ (libraries ocaml-protoc-plugin asli.libASL base64))
 
 (rule
  (targets AuxData.ml ByteInterval.ml CFG.ml CodeBlock.ml DataBlock.ml IR.ml Module.ml Offset.ml ProxyBlock.ml Section.ml Symbol.ml SymbolicExpression.ml)