diff --git a/.readthedocs.yml b/.readthedocs.yml
index 2d781ae81..80a1cd036 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -12,6 +12,5 @@ python:
   # https://docs.readthedocs.io/en/stable/config-file/v2.html#build-image
   version: 3.8  # Keep in sync with .github/workflows/checks.yml
   install:
-    - requirements: docs/pip.txt
     - requirements: docs/requirements.txt
     - path: .
diff --git a/docs/pip.txt b/docs/pip.txt
deleted file mode 100644
index 095e53a0d..000000000
--- a/docs/pip.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-# In pip 20.3-21.0, the default dependency resolver causes the build in
-# ReadTheDocs to fail due to memory exhaustion or timeout.
-pip<20.3
diff --git a/docs/requirements.txt b/docs/requirements.txt
index 3d34b47da..a0930ba1e 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,4 +1,4 @@
 Sphinx>=3.0
 sphinx-hoverxref>=0.2b1
 sphinx-notfound-page>=0.4
-sphinx_rtd_theme>=0.4
+sphinx-rtd-theme>=0.5.2
\ No newline at end of file