diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 39e86cba28..b35e936f1f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -115,7 +115,7 @@ jobs:
       run:  PWNLIB_NOTERM=1 python -bb -c 'from pwn import *; print(pwnlib.term.term_mode)'
 
     - name: Install documentation dependencies
-      run:  pip install -r docs/requirements.txt
+      run: pip install -r docs/requirements.txt
 
     - name: Manually install non-broken Unicorn
       run:  pip install unicorn==1.0.2rc3
diff --git a/docs/requirements.txt b/docs/requirements.txt
index f9beb681ea..95762a6084 100755
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -12,7 +12,8 @@ pypandoc
 pyserial>=2.7
 requests>=2.5.1
 ropgadget>=5.3
-sphinx<3.4
+sphinx==1.8.6; python_version < '3.0.0'
+sphinx==4.5.0; python_version >= '3.0.0'
 sphinx_rtd_theme
 sphinxcontrib-napoleon
-sphinxcontrib-autoprogram<=0.1.5
+sphinxcontrib-autoprogram<=0.1.5
\ No newline at end of file