diff --git a/requirements/common_constraints.txt b/requirements/common_constraints.txt
index 72cc4cc8..a95691da 100644
--- a/requirements/common_constraints.txt
+++ b/requirements/common_constraints.txt
@@ -18,3 +18,9 @@ Django<6.0
 # elastic search changelog: https://www.elastic.co/guide/en/enterprise-search/master/release-notes-7.14.0.html
 # See https://github.com/openedx/edx-platform/issues/35126 for more info
 elasticsearch<7.14.0
+
+# 2026-07-06: Constrain social-auth-* packages to the latest version compatible with
+# edx-drf-extensions<=10.6.0. (Newer versions require a POST instead of a GET.)
+# Tracking issue: https://github.com/openedx/edx-drf-extensions/issues/561
+social-auth-app-django>=5.9.0,<6.0.0
+social-auth-core>=4.9.1,<5.0.0
diff --git a/requirements/development.txt b/requirements/development.txt
index 16857526..a1d6f019 100644
--- a/requirements/development.txt
+++ b/requirements/development.txt
@@ -7,7 +7,7 @@
 asgiref==3.11.1           # via -r requirements/testing.txt, django
 astroid==4.0.4            # via -r requirements/testing.txt, pylint
 dill==0.4.1               # via -r requirements/testing.txt, pylint
-django==5.2.15            # via -c requirements/common_constraints.txt, -r requirements/testing.txt
+django==5.2.16            # via -c requirements/common_constraints.txt, -r requirements/testing.txt
 iniconfig==2.3.0          # via -r requirements/testing.txt, pytest
 isort==8.0.1              # via -r requirements/testing.txt, pylint
 mccabe==0.7.0             # via -r requirements/testing.txt, pylint
diff --git a/requirements/pip_tools.txt b/requirements/pip_tools.txt
index dc732755..2cd936a0 100644
--- a/requirements/pip_tools.txt
+++ b/requirements/pip_tools.txt
@@ -4,7 +4,7 @@
 #
 #    make upgrade
 #
-build==1.5.0              # via pip-tools
+build==1.5.1              # via pip-tools
 click==8.4.2              # via pip-tools
 packaging==26.2           # via build, wheel
 pip-tools==7.5.3          # via -r requirements/pip_tools.in
@@ -13,4 +13,4 @@ wheel==0.47.0             # via pip-tools
 
 # The following packages are considered to be unsafe in a requirements file:
 pip==26.1.2               # via pip-tools
-setuptools==82.0.1        # via pip-tools
+setuptools==83.0.0        # via pip-tools
diff --git a/requirements/sandbox.txt b/requirements/sandbox.txt
index a841d2e0..228dc6db 100644
--- a/requirements/sandbox.txt
+++ b/requirements/sandbox.txt
@@ -4,5 +4,5 @@
 #
 #    make upgrade
 #
-numpy==2.5.0              # via -r requirements/sandbox.in
+numpy==2.5.1              # via -r requirements/sandbox.in
 six==1.17.0               # via -r requirements/sandbox.in
diff --git a/requirements/tox.txt b/requirements/tox.txt
index a4111893..e7218af0 100644
--- a/requirements/tox.txt
+++ b/requirements/tox.txt
@@ -7,12 +7,12 @@
 cachetools==7.1.4         # via tox
 colorama==0.4.6           # via tox
 distlib==0.4.3            # via virtualenv
-filelock==3.29.4          # via python-discovery, tox, virtualenv
+filelock==3.29.7          # via python-discovery, tox, virtualenv
 packaging==26.2           # via pyproject-api, tox
 platformdirs==4.10.0      # via python-discovery, tox, virtualenv
 pluggy==1.6.0             # via tox
 pyproject-api==1.10.1     # via tox
-python-discovery==1.4.2   # via tox, virtualenv
+python-discovery==1.4.4   # via tox, virtualenv
 tomli-w==1.2.0            # via tox
-tox==4.56.1               # via -r requirements/tox.in
-virtualenv==21.5.1        # via tox
+tox==4.56.4               # via -r requirements/tox.in
+virtualenv==21.6.1        # via tox