diff --git a/requirements/conversion.txt b/requirements/conversion.txt
index b6cd639..a740390 100644
--- a/requirements/conversion.txt
+++ b/requirements/conversion.txt
@@ -8,5 +8,7 @@ coloredlogs==7.0
     # via -r conversion.in
 humanfriendly==3.8
     # via coloredlogs
-lxml==4.6.3
+lxml==6.1.0
+    # via -r conversion.in
+tqdm==4.67.3
     # via -r conversion.in
diff --git a/requirements/deploy.txt b/requirements/deploy.txt
index 9098fbd..d33660d 100644
--- a/requirements/deploy.txt
+++ b/requirements/deploy.txt
@@ -8,7 +8,9 @@ coloredlogs==7.0
     # via -r conversion.in
 humanfriendly==3.8
     # via coloredlogs
-lxml==4.6.3
+lxml==6.1.0
     # via -r conversion.in
 numpy==1.13.1
+    # via -r selection.in
 tqdm==4.32.2
+    # via -r conversion.in
diff --git a/requirements/develop.txt b/requirements/develop.txt
index eb4a804..ec68b76 100644
--- a/requirements/develop.txt
+++ b/requirements/develop.txt
@@ -16,7 +16,7 @@ isort==4.2.15
     # via pylint
 lazy-object-proxy==1.3.1
     # via astroid
-lxml==4.6.3
+lxml==6.1.0
     # via -r conversion.in
 mccabe==0.6.1
     # via pylint
@@ -25,6 +25,12 @@ numpy==1.13.1
 pycodestyle==2.3.1
     # via autopep8
 pylint==1.7.2
-six==1.10.0               # via astroid, pylint
+    # via -r develop.in
+six==1.10.0
+    # via
+    #   astroid
+    #   pylint
 tqdm==4.32.2
-wrapt==1.10.10            # via astroid
+    # via -r conversion.in
+wrapt==1.10.10
+    # via astroid