diff --git a/docs/requirements.txt b/docs/requirements.txt
index 137dc9c..2b4a876 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,4 +1,4 @@
-sphinxjp.themes.basicstrap>=0.5.0
-Sphinx>=6.1.3
-sphinxcontrib.bibtex>=2.5.0
-myst-parser>=1.0.0
\ No newline at end of file
+sphinxjp.themes.basicstrap==0.5.0
+Sphinx==6.1.3
+sphinxcontrib.bibtex==2.5.0
+myst-parser==1.0.0
\ No newline at end of file