diff --git a/pkgs/development/coq-modules/VST/default.nix b/pkgs/development/coq-modules/VST/default.nix
index 1d2a1a3c05fc..80aaf506139b 100644
--- a/pkgs/development/coq-modules/VST/default.nix
+++ b/pkgs/development/coq-modules/VST/default.nix
@@ -1,5 +1,7 @@
 { lib, mkCoqDerivation, coq, compcert, ITree, version ? null }:
 
+with lib;
+
 # A few modules that are not built and installed by default
 #  but that may be useful to some users.
 # They depend on ITree.
@@ -7,12 +9,15 @@ let extra_floyd_files = [
   "ASTsize.v"
   "io_events.v"
   "powerlater.v"
-  "printf.v"
+  ]
+  # floyd/printf.v is broken in VST 2.9
+  ++ optional (!versions.isGe "8.13" coq.coq-version) "printf.v"
+  ++ [
   "quickprogram.v"
   ];
 in
 
-with lib; mkCoqDerivation {
+mkCoqDerivation {
   pname = "coq${coq.coq-version}-VST";
   namePrefix = [];
   displayVersion = { coq = false; };
@@ -20,8 +25,10 @@ with lib; mkCoqDerivation {
   repo = "VST";
   inherit version;
   defaultVersion = with versions; switch coq.coq-version [
+    { case = range "8.13" "8.15"; out = "2.9"; }
     { case = range "8.12" "8.13"; out = "2.8"; }
   ] null;
+  release."2.9".sha256 = "sha256:1adwzbl1pprrrwrm7cm493098fizxanxpv7nyfbvwdhgbhcnv6qf";
   release."2.8".sha256 = "sha256-cyK88uzorRfjapNQ6XgQEmlbWnDsiyLve5po1VG52q0=";
   releaseRev = v: "v${v}";
   extraBuildInputs = [ ITree ];
diff --git a/pkgs/top-level/coq-packages.nix b/pkgs/top-level/coq-packages.nix
index 704457453779..c1a29b60306f 100644
--- a/pkgs/top-level/coq-packages.nix
+++ b/pkgs/top-level/coq-packages.nix
@@ -96,9 +96,7 @@ let
       topology = callPackage ../development/coq-modules/topology {};
       Velisarios = callPackage ../development/coq-modules/Velisarios {};
       Verdi = callPackage ../development/coq-modules/Verdi {};
-      VST = callPackage ../development/coq-modules/VST {
-        compcert = self.compcert.override { version = "3.9"; };
-      };
+      VST = callPackage ../development/coq-modules/VST {};
       zorns-lemma = callPackage ../development/coq-modules/zorns-lemma {};
       filterPackages = doesFilter: if doesFilter then filterCoqPackages self else self;
     };