diff --git a/.github/workflows/runtests.yml b/.github/workflows/runtests.yml
index 8c25d8dd..1d0925b9 100644
--- a/.github/workflows/runtests.yml
+++ b/.github/workflows/runtests.yml
@@ -27,10 +27,23 @@ jobs:
         julia-version:
           - '~1.6.0-0'
           - '~1.8.0-0'
-          - '~1.9.0-0'
           - '~1.10.0-0'
-          - 'nightly'
         os: ['ubuntu-latest']
+        cxxwrap: [ '' ]
+        include:
+          - cxxwrap: '0.13.4'
+            os: ubuntu-latest
+            julia-version: 1.9
+          - cxxwrap: '0.14.0'
+            os: ubuntu-latest
+            julia-version: 1.9
+          - cxxwrap: '0.13.4'
+            os: ubuntu-latest
+            julia-version: nightly
+          - cxxwrap: '0.14.0'
+            os: ubuntu-latest
+            julia-version: nightly
+
       fail-fast: false
     # Service containers to run
     services:
@@ -54,6 +67,9 @@ jobs:
         uses: julia-actions/setup-julia@v1
         with:
           version: ${{ matrix.julia-version }}
+      - name: "pin CxxWrap"
+        if: matrix.cxxwrap != ''
+        run: julia --project -e 'using Pkg; pkg"add CxxWrap@${{ matrix.cxxwrap }}"; pkg"pin CxxWrap";'
       - name: "Fill polyDB container"
         run: |
           wget -qO - https://www.mongodb.org/static/pgp/server-6.0.asc | sudo apt-key add -
diff --git a/Project.toml b/Project.toml
index 2f50a8dd..9835b834 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "Polymake"
 uuid = "d720cf60-89b5-51f5-aff5-213f193123e7"
 repo = "https://github.com/oscar-system/Polymake.jl.git"
-version = "0.11.4"
+version = "0.11.5"
 
 [deps]
 BinaryWrappers = "f01c122e-0ea1-4f85-ad8f-907073ad7a9f"
@@ -24,7 +24,7 @@ polymake_oscarnumber_jll = "10f31823-b687-53e6-9f29-edb9d4da9f9f"
 
 [compat]
 BinaryWrappers = "~0.1.0"
-CxxWrap = "~0.10.1, ~0.11, ~0.12, ~0.13.1"
+CxxWrap = "~0.10.1, ~0.11, ~0.12, ~0.13.1, ~0.14"
 JSON = "^0.20, ^0.21"
 Mongoc = "~0.6.0, ~0.7.0, ~0.8.0, ~0.9.0"
 Ninja_jll = "^1.11.1"
diff --git a/src/Polymake.jl b/src/Polymake.jl
index 0670fd0c..841c1a88 100644
--- a/src/Polymake.jl
+++ b/src/Polymake.jl
@@ -96,8 +96,13 @@ module LibPolymake
   using polymake_jll
   using libpolymake_julia_jll
   using polymake_oscarnumber_jll
+  import ..Polymake: libcxxwrap_build_version
 
-  @wrapmodule(joinpath(libpolymake_julia), :define_module_polymake)
+  if libcxxwrap_build_version() >= v"0.11.0"
+    @wrapmodule(() -> joinpath(libpolymake_julia), :define_module_polymake)
+  else
+    @wrapmodule(joinpath(libpolymake_julia), :define_module_polymake)
+  end
 
   function __init__()
 
@@ -135,8 +140,13 @@ module LibOscarNumber
   using polymake_oscarnumber_jll
 
   import ..LibPolymake: show_small_obj
+  import ..Polymake: libcxxwrap_build_version
 
-  @wrapmodule(joinpath(libpolymake_oscarnumber), :define_module_polymake_oscarnumber)
+  if libcxxwrap_build_version() >= v"0.11.0"
+    @wrapmodule(() -> joinpath(libpolymake_oscarnumber), :define_module_polymake_oscarnumber)
+  else
+    @wrapmodule(joinpath(libpolymake_oscarnumber), :define_module_polymake_oscarnumber)
+  end
 
   function __init__()
 
diff --git a/src/call_function.jl b/src/call_function.jl
index 5ff903ac..28d489e0 100644
--- a/src/call_function.jl
+++ b/src/call_function.jl
@@ -1,7 +1,3 @@
-function CxxWrap.StdVector{CxxWrap.StdString}(vec::AbstractVector{<:AbstractString})
-    return CxxWrap.StdVector(convert.(CxxWrap.StdString, vec))
-end
-
 """
     call_function([::Type{PropertyValue},] app::Symbol, func::Symbol, args...;
         template_parameters=String[], kwargs...)
@@ -16,7 +12,8 @@ function call_function(::Type{PropertyValue}, app::Symbol, func::Symbol, args...
     calltype::Symbol=:scalar, kwargs...)
     fname = Meta.pm_name_qualified(app, func)
     cargs = Meta.polymake_arguments(args...; kwargs...)
-    templ = CxxWrap.StdVector{CxxWrap.StdString}(template_parameters)
+    templ = CxxWrap.StdVector{CxxWrap.StdString}()
+    append!(templ, StdString.(template_parameters))
     return disable_sigint() do
         if calltype == :void
             internal_call_function_void(fname, templ, cargs)