diff --git a/requirements.txt b/requirements.txt
index 5ea5e9a..22e4f09 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ tabulate==0.8.7
 lxml==4.4.0
 mpmath==1.1.0
 numpy==1.17.3
-matplotlib==3.0.2
+matplotlib==3.9.2
 sympy==1.5.1
 cryptography==2.8
 seaborn==0.9.0
diff --git a/requirements/dev.txt b/requirements/dev.txt
index 5ea5e9a..22e4f09 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -3,7 +3,7 @@ tabulate==0.8.7
 lxml==4.4.0
 mpmath==1.1.0
 numpy==1.17.3
-matplotlib==3.0.2
+matplotlib==3.9.2
 sympy==1.5.1
 cryptography==2.8
 seaborn==0.9.0
diff --git a/requirements/prod.txt b/requirements/prod.txt
index 5ea5e9a..22e4f09 100644
--- a/requirements/prod.txt
+++ b/requirements/prod.txt
@@ -3,7 +3,7 @@ tabulate==0.8.7
 lxml==4.4.0
 mpmath==1.1.0
 numpy==1.17.3
-matplotlib==3.0.2
+matplotlib==3.9.2
 sympy==1.5.1
 cryptography==2.8
 seaborn==0.9.0
diff --git a/requirements/test.txt b/requirements/test.txt
index 5ea5e9a..22e4f09 100644
--- a/requirements/test.txt
+++ b/requirements/test.txt
@@ -3,7 +3,7 @@ tabulate==0.8.7
 lxml==4.4.0
 mpmath==1.1.0
 numpy==1.17.3
-matplotlib==3.0.2
+matplotlib==3.9.2
 sympy==1.5.1
 cryptography==2.8
 seaborn==0.9.0