diff --git a/requirements.txt b/requirements.txt
index b44997a..66c4316 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,11 +1,10 @@
 Sphinx==3.0.4
-git+http://github.com/SymbiFlow/sphinx_materialdesign_theme.git@master#egg=sphinx_symbiflow_theme
-git+http://github.com/SymbiFlow/sphinx-verilog-domain
+http://github.com/SymbiFlow/sphinx_materialdesign_theme/archive/master.zip#sphinx_symbiflow_theme
+http://github.com/SymbiFlow/sphinx-verilog-domain/archive/master.zip#sphinx-verilog-domain
 sphinx-markdown-tables==0.0.12
 breathe==4.18.1
-#symbolator==1.0.2
-git+https://github.com/hdl/pyHDLParser#egg=hdlparse
-git+https://github.com/hdl/symbolator
+https://github.com/hdl/pyHDLParser/archive/master.zip#hdlparse
+https://github.com/hdl/symbolator/archive/master.zip#symbolator
 sphinxcontrib-images==0.9.2
 recommonmark==0.6.0
 sphinxcontrib-bibtex==0.4.2