diff --git a/include/libopencm3/stm32/f1/flash.h b/include/libopencm3/stm32/f1/flash.h
index f9b2aa97..9787f452 100644
--- a/include/libopencm3/stm32/f1/flash.h
+++ b/include/libopencm3/stm32/f1/flash.h
@@ -20,9 +20,9 @@
 
 /*
  * For details see:
- * PM0042 Programming manual: STM32F10xxx Flash programming
- * October 2009, Doc ID 13259 Rev 7
- * http://www.st.com/stonline/products/literature/pm/13259.pdf
+ * PM0075 Programming manual: STM32F10xxx Flash programming
+ * August 2010, Doc ID 17863 Rev 1
+ * http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/PROGRAMMING_MANUAL/CD00283419.pdf
  */
 
 #ifndef LIBOPENCM3_FLASH_H
diff --git a/include/libopencm3/stm32/f2/flash.h b/include/libopencm3/stm32/f2/flash.h
index 15529ea8..ab71cc49 100644
--- a/include/libopencm3/stm32/f2/flash.h
+++ b/include/libopencm3/stm32/f2/flash.h
@@ -20,9 +20,10 @@
 
 /*
  * For details see:
- * PM0042 Programming manual: STM32F10xxx Flash programming
- * October 2009, Doc ID 13259 Rev 7
- * http://www.st.com/stonline/products/literature/pm/13259.pdf
+ * PM0059 Programming manual: STM32F205xx, STM32F207xx, STM32F215xx, STM32F217xx
+ * Flash programming
+ * May 2011, Doc ID 15687 Rev 4
+ * http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/PROGRAMMING_MANUAL/CD00233952.pdf
  */
 
 #ifndef LIBOPENCM3_FLASH_H
diff --git a/include/libopencm3/stm32/f4/flash.h b/include/libopencm3/stm32/f4/flash.h
index 15529ea8..4ed86f1f 100644
--- a/include/libopencm3/stm32/f4/flash.h
+++ b/include/libopencm3/stm32/f4/flash.h
@@ -20,9 +20,9 @@
 
 /*
  * For details see:
- * PM0042 Programming manual: STM32F10xxx Flash programming
- * October 2009, Doc ID 13259 Rev 7
- * http://www.st.com/stonline/products/literature/pm/13259.pdf
+ * PM0081 Programming manual: STM32F40xxx and STM32F41xxx Flash programming
+ * September 2011, Doc ID 018520 Rev 1
+ * http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/PROGRAMMING_MANUAL/DM00023388.pdf
  */
 
 #ifndef LIBOPENCM3_FLASH_H