diff --git a/haskell/assets/ghc_8_6_5_win_base.patch b/haskell/assets/ghc_8_6_5_win_base.patch
new file mode 100644
index 000000000..d870deeff
--- /dev/null
+++ b/haskell/assets/ghc_8_6_5_win_base.patch
@@ -0,0 +1,11 @@
+--- lib/package.conf.d/base-4.12.0.0.conf	2019-03-20 12:24:30.857292020 +0100
++++ lib/package.conf.d/base-4.12.0.0.conf	2019-03-20 12:24:44.637400564 +0100
+@@ -79,7 +79,7 @@
+ data-dir: $topdir\x86_64-windows-ghc-8.6.5\base-4.12.0.0
+ hs-libraries: HSbase-4.12.0.0
+ extra-libraries:
+-    wsock32 user32 shell32 msvcrt mingw32 mingwex
++    wsock32 user32 shell32 msvcrt mingw32 mingwex shlwapi
+ include-dirs: $topdir\base-4.12.0.0\include
+ includes:
+     HsBase.h
diff --git a/haskell/ghc_bindist.bzl b/haskell/ghc_bindist.bzl
index 3a5877690..1748e2b49 100644
--- a/haskell/ghc_bindist.bzl
+++ b/haskell/ghc_bindist.bzl
@@ -375,6 +375,7 @@ def ghc_bindist(
     patches = {
         "8.6.2": ["@io_tweag_rules_haskell//haskell:assets/ghc_8_6_2_win_base.patch"],
         "8.6.4": ["@io_tweag_rules_haskell//haskell:assets/ghc_8_6_4_win_base.patch"],
+        "8.6.5": ["@io_tweag_rules_haskell//haskell:assets/ghc_8_6_5_win_base.patch"],
     }.get(version) if target == "windows_amd64" else None
 
     extra_attrs = {"patches": patches, "patch_args": ["-p0"]} if patches else {}