diff --git a/pytket/conanfile.py b/pytket/conanfile.py
index ab262faad9..eb5c7adbac 100644
--- a/pytket/conanfile.py
+++ b/pytket/conanfile.py
@@ -38,7 +38,7 @@ def requirements(self):
         self.requires("pybind11_json/0.2.14")
         self.requires("symengine/0.12.0")
         self.requires("tkassert/0.3.4@tket/stable")
-        self.requires("tket/1.3.30@tket/stable")
+        self.requires("tket/1.3.31@tket/stable")
         self.requires("tklog/0.3.3@tket/stable")
         self.requires("tkrng/0.3.3@tket/stable")
         self.requires("tktokenswap/0.3.9@tket/stable")
diff --git a/tket/conanfile.py b/tket/conanfile.py
index 6ab8d81abb..5986b00417 100644
--- a/tket/conanfile.py
+++ b/tket/conanfile.py
@@ -23,7 +23,7 @@
 
 class TketConan(ConanFile):
     name = "tket"
-    version = "1.3.30"
+    version = "1.3.31"
     package_type = "library"
     license = "Apache 2"
     homepage = "https://github.com/CQCL/tket"
diff --git a/tket/src/Predicates/PassGenerators.cpp b/tket/src/Predicates/PassGenerators.cpp
index b6b863cf6f..469418a04f 100644
--- a/tket/src/Predicates/PassGenerators.cpp
+++ b/tket/src/Predicates/PassGenerators.cpp
@@ -775,23 +775,12 @@ PassPtr gen_decompose_routing_gates_to_cxs_pass(
                 Transforms::decompose_BRIDGE_to_CX() >>
                 Transforms::remove_redundancies();
   if (directed) {
-    OpTypeSet out_optypes{all_single_qubit_types()};
-    out_optypes.insert(OpType::CX);
-    OpTypeSet in_optypes = out_optypes;
-    in_optypes.insert(OpType::SWAP);
-    in_optypes.insert(OpType::BRIDGE);
-    in_optypes.insert(OpType::Barrier);
     PredicatePtr twoqbpred = std::make_shared<MaxTwoQubitGatesPredicate>();
     PredicatePtr connected = std::make_shared<ConnectivityPredicate>(arc);
     PredicatePtr directedpred = std::make_shared<DirectednessPredicate>(arc);
-    PredicatePtr ingates = std::make_shared<GateSetPredicate>(in_optypes);
-    PredicatePtr outgates = std::make_shared<GateSetPredicate>(out_optypes);
-    precons = {
-        CompilationUnit::make_type_pair(connected),
-        CompilationUnit::make_type_pair(ingates)};
+    precons = {CompilationUnit::make_type_pair(connected)};
     s_postcons = {
         CompilationUnit::make_type_pair(directedpred),
-        CompilationUnit::make_type_pair(outgates),
         CompilationUnit::make_type_pair(twoqbpred)};
     t = t >> Transforms::decompose_CX_directed(arc) >>
         Transforms::remove_redundancies();