diff --git a/pkgs/development/interpreters/python/cpython/3.6/default.nix b/pkgs/development/interpreters/python/cpython/3.6/default.nix
index 4c9d0c2a896..15a62b42959 100644
--- a/pkgs/development/interpreters/python/cpython/3.6/default.nix
+++ b/pkgs/development/interpreters/python/cpython/3.6/default.nix
@@ -26,7 +26,7 @@ with stdenv.lib;
 
 let
   majorVersion = "3.6";
-  minorVersion = "7";
+  minorVersion = "8";
   minorVersionSuffix = "";
   version = "${majorVersion}.${minorVersion}${minorVersionSuffix}";
   libPrefix = "python${majorVersion}";
@@ -51,7 +51,7 @@ in stdenv.mkDerivation {
 
   src = fetchurl {
     url = "https://www.python.org/ftp/python/${majorVersion}.${minorVersion}/Python-${version}.tar.xz";
-    sha256 = "0zgp8nvz3rkiz5cxd42vgpah4rvw3kmg9qz9lfq36rfnm40i9zc1";
+    sha256 = "14qi6n5gpcjnwy165wi9hkfcmbadc95ny6bxxldknxwmx50n4i1m";
   };
 
   NIX_LDFLAGS = optionalString stdenv.isLinux "-lgcc_s";
diff --git a/pkgs/development/interpreters/python/cpython/3.7/default.nix b/pkgs/development/interpreters/python/cpython/3.7/default.nix
index 093d8599690..800534e17d5 100644
--- a/pkgs/development/interpreters/python/cpython/3.7/default.nix
+++ b/pkgs/development/interpreters/python/cpython/3.7/default.nix
@@ -26,7 +26,7 @@ with stdenv.lib;
 
 let
   majorVersion = "3.7";
-  minorVersion = "1";
+  minorVersion = "2";
   minorVersionSuffix = "";
   version = "${majorVersion}.${minorVersion}${minorVersionSuffix}";
   libPrefix = "python${majorVersion}";
@@ -48,7 +48,7 @@ in stdenv.mkDerivation {
 
   src = fetchurl {
     url = "https://www.python.org/ftp/python/${majorVersion}.${minorVersion}/Python-${version}.tar.xz";
-    sha256 = "0v9x4h22rh5cwpsq1mwpdi3c9lc9820lzp2nmn9g20llij72nzps";
+    sha256 = "1fzi9d2gibh0wzwidyckzbywsxcsbckgsl05ryxlifxia77fhgyq";
   };
 
   NIX_LDFLAGS = optionalString stdenv.isLinux "-lgcc_s";