diff --git a/requirements-dev.in b/requirements-dev.in
index d153a4e5..762c500a 100644
--- a/requirements-dev.in
+++ b/requirements-dev.in
@@ -1,3 +1,3 @@
-pdoc3==0.8.3
+pdoc3==0.9.1
 pip-tools==5.2.1
 helium==3.0.4
diff --git a/requirements-dev.txt b/requirements-dev.txt
index d5a0142c..195b30fa 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -53,8 +53,8 @@ markupsafe==1.1.1 \
     --hash=sha256:e249096428b3ae81b08327a63a485ad0878de3fb939049038579ac0ef61e17e7 \
     --hash=sha256:e8313f01ba26fbbe36c7be1966a7b7424942f670f38e666995b88d012765b9be \
     # via mako
-pdoc3==0.8.3 \
-    --hash=sha256:19bd1a72e1c82875a6927b244aca826dedb635ea2a7a36ac62cbe063a8ddc30d \
+pdoc3==0.9.1 \
+    --hash=sha256:e1848d5485b8dd4662272f83bb5f7df4a68e0a5d76c87be30327977777168894 \
     # via -r requirements-dev.in
 pip-tools==5.2.1 \
     --hash=sha256:1690bef5f0f714160c3aedacb03520e2359a78f7f9fa17e574cf8659cf2ef614 \