diff --git a/README.rst b/README.rst
index 7febae0..cf266e9 100644
--- a/README.rst
+++ b/README.rst
@@ -101,10 +101,10 @@ Other contributors:
 
 .. _Raspberry Pi Foundation: https://www.raspberrypi.org/
 .. _raspberrypi.org: https://www.raspberrypi.org/downloads/
-.. _Recipes: http://gpiozero.readthedocs.io/en/latest/recipes.html
-.. _Contributing: http://gpiozero.readthedocs.io/en/latest/contributing.html
-.. _Development: http://gpiozero.readthedocs.io/en/latest/development.html
-.. _Installing: http://gpiozero.readthedocs.io/en/latest/installing.html
+.. _Recipes: https://gpiozero.readthedocs.io/en/latest/recipes.html
+.. _Contributing: https://gpiozero.readthedocs.io/en/latest/contributing.html
+.. _Development: https://gpiozero.readthedocs.io/en/latest/development.html
+.. _Installing: https://gpiozero.readthedocs.io/en/latest/installing.html
 
 .. _Ben Nuttall: https://github.com/bennuttall
 .. _Dave Jones: https://github.com/waveform80
diff --git a/docs/license.rst b/docs/license.rst
index 31ca3e0..743ab80 100644
--- a/docs/license.rst
+++ b/docs/license.rst
@@ -31,4 +31,4 @@ CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-.. _Raspberry Pi Foundation: http://raspberrypi.org/
+.. _Raspberry Pi Foundation: https://www.raspberrypi.org/
diff --git a/docs/recipes_advanced.rst b/docs/recipes_advanced.rst
index b42725f..8f770d6 100644
--- a/docs/recipes_advanced.rst
+++ b/docs/recipes_advanced.rst
@@ -127,4 +127,4 @@ run the following commands:
 
 .. _travispy: https://travispy.readthedocs.io/
 .. _STATUS Zero: https://thepihut.com/status
-.. _BlueDot documentation: http://bluedot.readthedocs.io/en/latest/index.html
+.. _BlueDot documentation: https://bluedot.readthedocs.io/en/latest/index.html