diff --git a/config/security/securityConfig.go b/config/security/securityConfig.go
index b2748123099..b5a17ac2d18 100644
--- a/config/security/securityConfig.go
+++ b/config/security/securityConfig.go
@@ -42,7 +42,7 @@ var DefaultConfig = Config{
 		),
 		// These have been tested to work with Hugo's external programs
 		// on Windows, Linux and MacOS.
-		OsEnv: NewWhitelist("(?i)^(PATH|PATHEXT|APPDATA|TMP|TEMP|TERM)$"),
+		OsEnv: NewWhitelist("(?i)^((HTTPS?|NO)_PROXY|PATH(EXT)?|APPDATA|TE?MP|TERM)$"),
 	},
 	Funcs: Funcs{
 		Getenv: NewWhitelist("^HUGO_"),
diff --git a/config/security/securityonfig_test.go b/config/security/securityonfig_test.go
index 24190a57ff7..c8753f7fc7f 100644
--- a/config/security/securityonfig_test.go
+++ b/config/security/securityonfig_test.go
@@ -140,7 +140,7 @@ func TestToTOML(t *testing.T) {
 	got := DefaultConfig.ToTOML()
 
 	c.Assert(got, qt.Equals,
-		"[security]\n  enableInlineShortcodes = false\n\n  [security.exec]\n    allow = ['^dart-sass-embedded$', '^go$', '^npx$', '^postcss$']\n    osEnv = ['(?i)^(PATH|PATHEXT|APPDATA|TMP|TEMP|TERM)$']\n\n  [security.funcs]\n    getenv = ['^HUGO_']\n\n  [security.http]\n    methods = ['(?i)GET|POST']\n    urls = ['.*']",
+		"[security]\n  enableInlineShortcodes = false\n\n  [security.exec]\n    allow = ['^dart-sass-embedded$', '^go$', '^npx$', '^postcss$']\n    osEnv = ['(?i)^((HTTPS?|NO)_PROXY|PATH(EXT)?|APPDATA|TE?MP|TERM)$']\n\n  [security.funcs]\n    getenv = ['^HUGO_']\n\n  [security.http]\n    methods = ['(?i)GET|POST']\n    urls = ['.*']",
 	)
 }
 
diff --git a/docs/data/docs.json b/docs/data/docs.json
index fe4efeb22e8..b41cb351dca 100644
--- a/docs/data/docs.json
+++ b/docs/data/docs.json
@@ -1650,7 +1650,7 @@
           "^postcss$"
         ],
         "osEnv": [
-          "(?i)^(PATH|PATHEXT|APPDATA|TMP|TEMP|TERM)$"
+          "(?i)^((HTTPS?|NO)_PROXY|PATH(EXT)?|APPDATA|TE?MP|TERM)$"
         ]
       },
       "funcs": {