diff --git a/requirements.txt b/requirements.txt
index a193fc3..51d1d3d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ ucsc-twobittofa
 macs2 ==2.1.1.20160309 #2.1.0 (no binaries for OSX)
 boost ==1.57.0
 openblas ==0.2.19
-numpy ==1.11.3 #1.13.3 #1.10.2 (no binaries for OSX) #1.9.0, 1.8.2 conflicts with ATAQC
+numpy ==1.21.0 #1.13.3 #1.10.2 (no binaries for OSX) #1.9.0, 1.8.2 conflicts with ATAQC
 matplotlib ==1.5.1
 six==1.10.0 # to fix (ImportError: cannot import name _thread)
 python-dateutil==2.6.1
diff --git a/requirements_py3.txt b/requirements_py3.txt
index f25721c..db0d6e0 100644
--- a/requirements_py3.txt
+++ b/requirements_py3.txt
@@ -1,6 +1,6 @@
 nomkl
 python ==3.5.0
-numpy ==1.11.3
+numpy ==1.21.0
 idr ==2.0.3
 bedtools ==2.26.0
 pigz