diff --git a/hlibgit2.cabal b/hlibgit2.cabal
--- a/hlibgit2.cabal
+++ b/hlibgit2.cabal
@@ -1,5 +1,5 @@
 Name:                hlibgit2
-Version:             0.18.0.13
+Version:             0.18.0.14
 Synopsis:            Low-level bindings to libgit2
 Description:         Bindings to libgit2 v0.18.0.
 License-file:        LICENSE
@@ -29,6 +29,8 @@
   default-language: Haskell98
   type: exitcode-stdio-1.0
   ghc-options: -Wall
+  if os(linux)
+    ghc-options: -optl-pthread
   main-is: Main.hs
   hs-source-dirs: test
   build-depends:
@@ -233,4 +235,4 @@
     include-dirs:
       libgit2/src/unix
     extra-libraries:
-      ssl, crypto
+      ssl, crypto, pthread