1 files changed, 5 insertions, 0 deletions
diff --git a/lib/README b/lib/README
index e6bdb7fd..0465df16 100644
--- a/lib/README
+++ b/lib/README
@@ -12,6 +12,11 @@ The cmsis-sam3x8e directory contains code from the Arduino project:
 version 1.5.1 (extracted on 20160608). It has been modified to compile
 with gcc's LTO feature. See cmsis-sam3x8e.patch for the modifications.
 
+The cmsis-stm32f1 and the hal-stm32f1 directories contain code from
+STMicroelectronics:
+  http://www.st.com/en/embedded-software/stm32cubef1.html
+version 1.6.0 (extracted 20180330).
+
 The hub-ctrl directory contains code from:
   https://github.com/codazoda/hub-ctrl.c/
 revision 42095e522859059e8a5f4ec05c1e3def01a870a9.