diff --git a/src/alure.mk b/src/alure.mk
index 9e3bc617..4e56ceaf 100644
--- a/src/alure.mk
+++ b/src/alure.mk
@@ -1,13 +1,13 @@
 # This file is part of MXE. See LICENSE.md for licensing information.
 
 PKG             := alure
-$(PKG)_WEBSITE  := http://kcat.strangesoft.net/alure.html
+$(PKG)_WEBSITE  := https://kcat.strangesoft.net/alure.html
 $(PKG)_IGNORE   :=
 $(PKG)_VERSION  := 1.2
 $(PKG)_CHECKSUM := 465e6adae68927be3a023903764662d64404e40c4c152d160e3a8838b1d70f71
 $(PKG)_SUBDIR   := $(PKG)-$($(PKG)_VERSION)
 $(PKG)_FILE     := $(PKG)-$($(PKG)_VERSION).tar.bz2
-$(PKG)_URL      := http://kcat.strangesoft.net/alure-releases/$($(PKG)_FILE)
+$(PKG)_URL      := https://kcat.strangesoft.net/alure-releases/$($(PKG)_FILE)
 $(PKG)_DEPS     := cc flac libsndfile mpg123 ogg openal vorbis
 
 define $(PKG)_UPDATE
diff --git a/src/fltk.mk b/src/fltk.mk
index 17b11b6a..430c6300 100644
--- a/src/fltk.mk
+++ b/src/fltk.mk
@@ -1,7 +1,7 @@
 # This file is part of MXE. See LICENSE.md for licensing information.
 
 PKG             := fltk
-$(PKG)_WEBSITE  := http://www.fltk.org/
+$(PKG)_WEBSITE  := https://www.fltk.org/
 $(PKG)_DESCR    := FLTK
 $(PKG)_IGNORE   :=
 $(PKG)_VERSION  := 1.3.4-2
@@ -9,11 +9,11 @@ $(PKG)_CHECKSUM := 25d349c18c99508737d48f225a2eb26a43338f9247551cab72a317fa42cda
 $(PKG)_SUBDIR   := $(PKG)-$($(PKG)_VERSION)
 $(PKG)_MAJOR    := $(word 1,$(subst -, ,$($(PKG)_VERSION)))
 $(PKG)_FILE     := $($(PKG)_SUBDIR)-source.tar.gz
-$(PKG)_URL      := http://fltk.org/pub/fltk/$($(PKG)_MAJOR)/$($(PKG)_FILE)
+$(PKG)_URL      := https://fltk.org/pub/fltk/$($(PKG)_MAJOR)/$($(PKG)_FILE)
 $(PKG)_DEPS     := cc jpeg libpng pthreads zlib
 
 define $(PKG)_UPDATE
-    $(WGET) -q -O- 'http://www.fltk.org/software.php' | \
+    $(WGET) -q -O- 'https://www.fltk.org/software.php' | \
     $(SED) -n 's,.*>fltk-\([0-9]\+\([\.\-][0-9]\+\)\+\)-source\.tar\.gz<.*,\1,p' | \
     grep -v '^1\.1\.' | \
     head -1
diff --git a/src/libntlm.mk b/src/libntlm.mk
index 2a47f4ff..69500042 100644
--- a/src/libntlm.mk
+++ b/src/libntlm.mk
@@ -12,7 +12,7 @@ $(PKG)_URL      := https://www.nongnu.org/libntlm/releases/$($(PKG)_FILE)
 $(PKG)_DEPS     := cc
 
 define $(PKG)_UPDATE
-    $(WGET) -q -O- 'http://www.nongnu.org/libntlm/releases/'  | \
+    $(WGET) -q -O- 'https://www.nongnu.org/libntlm/releases/'  | \
     $(SED) -n 's,.*libntlm-\([0-9]\+\)\(\.[0-9]\+\)*\..*,\1\2,p' |\
     tail -1
 endef
diff --git a/src/openal.mk b/src/openal.mk
index ec884b01..ed5823b0 100644
--- a/src/openal.mk
+++ b/src/openal.mk
@@ -1,17 +1,17 @@
 # This file is part of MXE. See LICENSE.md for licensing information.
 
 PKG             := openal
-$(PKG)_WEBSITE  := http://kcat.strangesoft.net/openal.html
+$(PKG)_WEBSITE  := https://openal-soft.org/
 $(PKG)_IGNORE   :=
 $(PKG)_VERSION  := 1.16.0
 $(PKG)_CHECKSUM := 2f3dcd313fe26391284fbf8596863723f99c65d6c6846dccb48e79cadaf40d5f
 $(PKG)_SUBDIR   := openal-soft-$($(PKG)_VERSION)
 $(PKG)_FILE     := openal-soft-$($(PKG)_VERSION).tar.bz2
-$(PKG)_URL      := http://kcat.strangesoft.net/openal-releases/$($(PKG)_FILE)
+$(PKG)_URL      := https://openal-soft.org/openal-releases/$($(PKG)_FILE)
 $(PKG)_DEPS     := cc portaudio
 
 define $(PKG)_UPDATE
-    $(WGET) -q -O- 'http://kcat.strangesoft.net/openal-releases/?C=M;O=D' | \
+    $(WGET) -q -O- 'https://openal-soft.org/openal-releases/?C=M;O=D' | \
     $(SED) -n 's,.*"openal-soft-\([0-9][^"]*\)\.tar.*,\1,p' | \
     $(SORT) -V | \
     tail -1