diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ef1716a3..6bd46cb7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -66,6 +66,10 @@ jobs:
             squashfs: true
             julia-version: "1.11"
 
+          - runner: privileged
+            squashfs: true
+            julia-version: "nightly"
+
           # - runner: privileged
           #   squashfs: true
           #   julia-version: "nightly"
diff --git a/src/Prefix.jl b/src/Prefix.jl
index 2e67c792..ba57abc1 100644
--- a/src/Prefix.jl
+++ b/src/Prefix.jl
@@ -602,7 +602,7 @@ function get_addable_spec(name::AbstractString, version::VersionNumber;
 end
 
 # Helper function to install packages also in Julia v1.8
-function Pkg_add(args...; kwargs...)
+function _Pkg_add(args...; kwargs...)
     @static if VERSION < v"1.8.0"
         Pkg.add(args...; kwargs...)
     else
@@ -615,6 +615,15 @@ function Pkg_add(args...; kwargs...)
     end
 end
 
+function Pkg_add(ctx::Pkg.Types.Context, rest...; kwargs...)
+    @static if VERSION >= v"1.13-"
+        # No need to pass the context anymore.
+        _Pkg_add(rest...; julia_version = ctx.julia_version, kwargs...)
+    else
+        _Pkg_add(ctx, rest...; kwargs...)
+    end
+end
+
 """
     setup_dependencies(prefix::Prefix, dependencies::Vector{PackageSpec}, platform::AbstractPlatform; verbose::Bool = false)
 
diff --git a/test/dependencies.jl b/test/dependencies.jl
index 9f79f393..d4853032 100644
--- a/test/dependencies.jl
+++ b/test/dependencies.jl
@@ -373,7 +373,7 @@ end
             with_temp_project() do dir
                 prefix = Prefix(dir)
                 dependencies = [
-                    PackageSpec(; name="CMake_jll", version = v"3.24.3")
+                    PackageSpec(; name="CMake_jll", version = "3.24.3")
                 ]
                 platform = Platform("x86_64", "linux"; libc="musl", cxxstring_abi="cxx11")
                 if v"1.9" <= VERSION < v"1.11"