diff --git a/pkgs/tools/security/aflplusplus/default.nix b/pkgs/tools/security/aflplusplus/default.nix
index 456cc84efbaa..55cd35e0949e 100644
--- a/pkgs/tools/security/aflplusplus/default.nix
+++ b/pkgs/tools/security/aflplusplus/default.nix
@@ -37,13 +37,13 @@ let
   libtokencap = callPackage ./libtokencap.nix { inherit aflplusplus; };
   aflplusplus = stdenvNoCC.mkDerivation rec {
     pname = "aflplusplus";
-    version = "4.32c";
+    version = "4.34c";
 
     src = fetchFromGitHub {
       owner = "AFLplusplus";
       repo = "AFLplusplus";
       tag = "v${version}";
-      hash = "sha256-Fhf7dHyHd8IGXq7t1y9TwN9VN8SckLRkgfGGMvmqIqk=";
+      hash = "sha256-ymHt746cuZ+jyWs0vB3R1qNgpgAu6pUVXp9/g9Km9JI=";
     };
 
     enableParallelBuilding = true;
@@ -81,7 +81,8 @@ let
         --replace-fail "CLANG_BIN" '"${clang}/bin/clang"' \
         --replace-fail '"gcc"' '"${gcc}/bin/gcc"' \
         --replace-fail '"g++"' '"${gcc}/bin/g++"' \
-        --replace-fail 'getenv("AFL_PATH")' "(getenv(\"AFL_PATH\") ? getenv(\"AFL_PATH\") : \"$out/lib/afl\")"
+        --replace-fail 'getenv("AFL_PATH")' "(getenv(\"AFL_PATH\") ? getenv(\"AFL_PATH\") : \"$out/lib/afl\")" \
+        --replace-fail '#ifndef "${clang}/bin/clang"' '#ifndef CLANG_BIN'
 
       substituteInPlace src/afl-ld-lto.c \
         --replace-fail 'LLVM_BINDIR' '"/nixpkgs-patched-does-not-exist"'
diff --git a/pkgs/tools/security/aflplusplus/qemu.nix b/pkgs/tools/security/aflplusplus/qemu.nix
index 515738fa163d..cc9d54e37a8c 100644
--- a/pkgs/tools/security/aflplusplus/qemu.nix
+++ b/pkgs/tools/security/aflplusplus/qemu.nix
@@ -25,10 +25,8 @@ stdenv.mkDerivation {
   src = fetchFromGitHub {
     owner = "AFLplusplus";
     repo = "qemuafl";
-    # Use a fixed qemuafl version instead of the one in https://github.com/AFLplusplus/AFLplusplus/blob/v4.31c/qemu_mode/QEMUAFL_VERSION.
-    # See: https://github.com/AFLplusplus/AFLplusplus/issues/2296.
-    rev = "ef1cd9a8cb1522c918faab42805216f9a4054dda";
-    hash = "sha256-tbKDnDoBtFhvtE9nbi9XuHPuFuGezUFngnw4pJyKFgY=";
+    rev = "0732e079ed3716ef0b81e708cd9dcd372238a07f";
+    hash = "sha256-YoMHnJuyOdGcFVrY0I0Oja0qKNKdAa25RByVB5ui2do=";
     fetchSubmodules = true;
   };