diff --git a/platforms/cuda.jl b/platforms/cuda.jl
index 40687a6a37d..2d8b9d93f3b 100644
--- a/platforms/cuda.jl
+++ b/platforms/cuda.jl
@@ -226,12 +226,12 @@ function required_dependencies(platform; static_sdk=false)
     end
     release = VersionNumber(tags(platform)["cuda"])
     deps = BinaryBuilder.AbstractDependency[
-        BuildDependency(PackageSpec(name="CUDA_SDK_jll", version=CUDA.full_version(release))),
+        BuildDependency(PackageSpec(name="CUDA_SDK_jll", version=string(CUDA.full_version(release)))),
         RuntimeDependency(PackageSpec(name="CUDA_Runtime_jll"))
     ]
 
     if static_sdk
-        push!(deps, BuildDependency(PackageSpec(name="CUDA_SDK_static_jll", version=CUDA.full_version(release))))
+        push!(deps, BuildDependency(PackageSpec(name="CUDA_SDK_static_jll", version=string(CUDA.full_version(release)))))
     end
 
     return deps