diff --git a/.constraints/py3.10.txt b/.constraints/py3.10.txt
index 73bb98b5f..3531ab669 100644
--- a/.constraints/py3.10.txt
+++ b/.constraints/py3.10.txt
@@ -87,7 +87,7 @@ latexcodec==3.0.0
 lsprotocol==2023.0.1
 markdown-it-py==3.0.0
 markupsafe==2.1.5
-matplotlib==3.9.0
+matplotlib==3.8.4
 matplotlib-inline==0.1.7
 mdit-py-plugins==0.4.1
 mdurl==0.1.2
diff --git a/.constraints/py3.11.txt b/.constraints/py3.11.txt
index 418135f43..e03b52218 100644
--- a/.constraints/py3.11.txt
+++ b/.constraints/py3.11.txt
@@ -86,7 +86,7 @@ latexcodec==3.0.0
 lsprotocol==2023.0.1
 markdown-it-py==3.0.0
 markupsafe==2.1.5
-matplotlib==3.9.0
+matplotlib==3.8.4
 matplotlib-inline==0.1.7
 mdit-py-plugins==0.4.1
 mdurl==0.1.2
diff --git a/.constraints/py3.12.txt b/.constraints/py3.12.txt
index c2461c519..2745be053 100644
--- a/.constraints/py3.12.txt
+++ b/.constraints/py3.12.txt
@@ -86,7 +86,7 @@ latexcodec==3.0.0
 lsprotocol==2023.0.1
 markdown-it-py==3.0.0
 markupsafe==2.1.5
-matplotlib==3.9.0
+matplotlib==3.8.4
 matplotlib-inline==0.1.7
 mdit-py-plugins==0.4.1
 mdurl==0.1.2
diff --git a/.constraints/py3.9.txt b/.constraints/py3.9.txt
index 6db71122e..2fae2fb99 100644
--- a/.constraints/py3.9.txt
+++ b/.constraints/py3.9.txt
@@ -88,7 +88,7 @@ latexcodec==3.0.0
 lsprotocol==2023.0.1
 markdown-it-py==3.0.0
 markupsafe==2.1.5
-matplotlib==3.9.0
+matplotlib==3.8.4
 matplotlib-inline==0.1.7
 mdit-py-plugins==0.4.1
 mdurl==0.1.2