diff --git a/requirements.txt b/requirements.txt
index 7cdaa852..2086abec 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,16 +2,16 @@ alembic==1.6.5
 asn1crypto==0.24.0
 Beaker==1.9.0
 cached-property==1.5.2
-certifi==2021.5.30
+certifi==2022.12.7
 cftime==1.3.1
 chardet==3.0.4
 click==7.1.2
 coards==1.0.5
-cryptography==3.3.2
+cryptography==39.0.1
 # pre-installed
 #Cython==0.27.3
 enum34==1.1.6
-Flask==1.0.2
+Flask==2.2.5
 funcsigs==1.0.2
 ga-wsgi-client==0.1
 # pre-installed
@@ -20,7 +20,7 @@ Genshi==0.7
 GeoAlchemy==0.7.3
 GeoAlchemy2==0.9.1
 gitdb2==2.0.6
-GitPython==2.1.15
+GitPython==3.1.30
 # pre-installed
 # h5py==2.7.1
 idna==2.6
@@ -40,7 +40,7 @@ olefile==0.46
 openid2rp==1.12
 Paste==2.0.3
 pdp-util==1.2.1
-Pillow==4.3.0
+Pillow==9.2.0
 ply==3.10
 psycopg2==2.7.3.2
 pupynere-pdp==1.1.6
@@ -63,7 +63,7 @@ python-dateutil==2.6.1
 python-editor==1.0.4
 pytz==2017.3
 PyYAML==5.4
-requests==2.21.0
+requests==2.31.0
 SecretStorage==2.3.1
 simplejson==3.12.0
 six==1.11.0
@@ -71,10 +71,11 @@ slimit==0.8.1
 smmap==3.0.5
 smmap2==3.0.1
 SQLAlchemy==1.3.0
-sqlparse==0.3.1
+sqlparse==0.4.4
 static==1.1.1
 urllib3==1.26.5
 WebOb==1.7.3
-Werkzeug==0.15.3
+Werkzeug==2.2.3
 XlsxWriter==1.0.2
 xlwt==1.3.0
+numpy>=1.22.2 # not directly required, pinned by Snyk to avoid a vulnerability