diff --git a/picotool/conanfile.py b/picotool/conanfile.py
index 625c943..bb8fb34 100644
--- a/picotool/conanfile.py
+++ b/picotool/conanfile.py
@@ -43,8 +43,8 @@ def requirements(self):
         for dep, version in DEPENDENCIES_VERSION.items():
             self.requires(f"{dep}/{version}")
 
-        self.requires("libusb/1.0.29")
-        self.requires(f"picosdk/{self.version}")
+        self.requires("libusb/1.0.29", visible=False)
+        self.requires(f"picosdk/{self.version}", visible=False)
 
     def layout(self):
         cmake_layout(self, src_folder="picotool")
diff --git a/pioasm/conanfile.py b/pioasm/conanfile.py
index c7b5b5a..3af42cf 100644
--- a/pioasm/conanfile.py
+++ b/pioasm/conanfile.py
@@ -39,7 +39,7 @@ class PioASM(ConanFile):
     exports_sources = "patches/*"
 
     def build_requirements(self):
-        self.tool_requires("cmake/[^4.0.0]")
+        self.tool_requires("cmake/[^4.0.0]", visible=False)
 
     def layout(self):
         cmake_layout(self)