diff --git a/requirements/docs.txt b/requirements/docs.txt
index a61302dbdcd9..5ff169c19d14 100644
--- a/requirements/docs.txt
+++ b/requirements/docs.txt
@@ -92,6 +92,6 @@ sphinx-rtd-theme==0.5.0 \
 snowballstemmer==2.0.0 \
     --hash=sha256:209f257d7533fdb3cb73bdbd24f436239ca3b2fa67d56f6ff88e86be08cc5ef0 \
     --hash=sha256:df3bac3df4c2c01363f3dd2cfa78cce2840a79b9f1c2d2de9ce8d31683992f52
-chardet==3.0.4 \
-    --hash=sha256:fc323ffcaeaed0e0a02bf4d117757b98aed530d9ed4531e3e15460124c106691 \
-    --hash=sha256:84ab92ed1c4d4f16916e05906b6b75a6c0fb5db821cc65e70cbd64a3e2a5eaae
+chardet==4.0.0 \
+    --hash=sha256:f864054d66fd9118f2e67044ac8981a54775ec5b67aed0441892edb553d21da5 \
+    --hash=sha256:0d6f53a15db4120f2b08c94f11e7d93d2c911ee118b6b30a04ec3ee8310179fa
diff --git a/requirements/prod.txt b/requirements/prod.txt
index 78b138f00ba1..4fdac5c97eb4 100644
--- a/requirements/prod.txt
+++ b/requirements/prod.txt
@@ -166,9 +166,9 @@ botocore==1.19.34 \
     --hash=sha256:49f5e56a7382a65ee0873371edcd91bdba8fc3f70abe102ebc1a0da2e6fbed06 \
     --hash=sha256:4d81d92127ef646ae0f0ee84c9c220c92fa82312e765c29f8cb3b000fdbdd038
 # chardet is required by requests
-chardet==3.0.4 \
-    --hash=sha256:fc323ffcaeaed0e0a02bf4d117757b98aed530d9ed4531e3e15460124c106691 \
-    --hash=sha256:84ab92ed1c4d4f16916e05906b6b75a6c0fb5db821cc65e70cbd64a3e2a5eaae
+chardet==4.0.0 \
+    --hash=sha256:f864054d66fd9118f2e67044ac8981a54775ec5b67aed0441892edb553d21da5 \
+    --hash=sha256:0d6f53a15db4120f2b08c94f11e7d93d2c911ee118b6b30a04ec3ee8310179fa
 # click is required by dennis, pyupio
 click==7.1.2 \
     --hash=sha256:dacca89f4bfadd5de3d7489b7c8a566eee0d3676333fbb50030263894c38c0dc \