diff --git a/.github/workflows/llvm-quick-fuzz.yml b/.github/workflows/llvm-quick-fuzz.yml
index e1be050..52149af 100644
--- a/.github/workflows/llvm-quick-fuzz.yml
+++ b/.github/workflows/llvm-quick-fuzz.yml
@@ -35,7 +35,8 @@ jobs:
         os: [ubuntu-22.04]
         # See doc/developing.md
         ghc: ["9.2.8"]
-        llvm: [ "https://github.com/llvm/llvm-project/releases/download/llvmorg-16.0.2/clang+llvm-16.0.2-x86_64-linux-gnu-ubuntu-22.04.tar.xz"
+        llvm: [ "https://github.com/llvm/llvm-project/releases/download/llvmorg-17.0.2/clang+llvm-17.0.2-x86_64-linux-gnu-ubuntu-22.04.tar.xz"
+              , "https://github.com/llvm/llvm-project/releases/download/llvmorg-16.0.2/clang+llvm-16.0.2-x86_64-linux-gnu-ubuntu-22.04.tar.xz"
               , "https://github.com/llvm/llvm-project/releases/download/llvmorg-15.0.6/clang+llvm-15.0.6-x86_64-linux-gnu-ubuntu-18.04.tar.xz"
               , "https://github.com/llvm/llvm-project/releases/download/llvmorg-14.0.0/clang+llvm-14.0.0-x86_64-linux-gnu-ubuntu-18.04.tar.xz"
               , "https://github.com/llvm/llvm-project/releases/download/llvmorg-13.0.0/clang+llvm-13.0.0-x86_64-linux-gnu-ubuntu-20.04.tar.xz"
diff --git a/flake.nix b/flake.nix
index 0f399c2..00516ce 100644
--- a/flake.nix
+++ b/flake.nix
@@ -152,6 +152,7 @@
                 "14"
                 "15"
                 "16"
+                "17"
               ]
             );
           TESTS_PREP = wrap "llvm-pretty-bc-parser-TESTS_PREP"