diff --git a/README b/README
index ae21cc74d..ddbb85689 100644
--- a/README
+++ b/README
@@ -72,7 +72,7 @@ Building and installing it
 To install from the GIT repository:
 
   0. Clone the code from GIT:
-     git clone git://sourceware.org/git/valgrind.git
+     git clone https://sourceware.org/git/valgrind.git
      There are further instructions at
      http://www.valgrind.org/downloads/repository.html.
 
diff --git a/auxprogs/update-demangler b/auxprogs/update-demangler
index 307a0ea36..7b1456315 100755
--- a/auxprogs/update-demangler
+++ b/auxprogs/update-demangler
@@ -37,7 +37,7 @@ echo "Updating the demangler in $DIR"
 mkdir gcc
 cd gcc
 git init
-git remote add origin git://gcc.gnu.org/git/gcc.git
+git remote add origin https://gcc.gnu.org/git/gcc.git
 git config core.sparsecheckout true
 echo "libiberty/*" > .git/info/sparse-checkout
 echo "include/*" >> .git/info/sparse-checkout
@@ -91,7 +91,7 @@ echo "Checking out coregrind/m_demangle"
 mkdir valgrind-sparse-clone
 cd valgrind-sparse-clone
 git init
-git remote add origin -f git://sourceware.org/git/valgrind.git/
+git remote add origin -f https://sourceware.org/git/valgrind.git/
 git config core.sparsecheckout true
 echo "coregrind/m_demangle/*" > .git/info/sparse-checkout
 git pull origin master
diff --git a/docs/internals/git-HOWTO.txt b/docs/internals/git-HOWTO.txt
index 628ef6a51..fd7e30cd5 100644
--- a/docs/internals/git-HOWTO.txt
+++ b/docs/internals/git-HOWTO.txt
@@ -14,7 +14,7 @@ Valgrind Users
 
 Valgrind users can clone the Valgrind source code repository as follows:
 
-git clone git://sourceware.org/git/valgrind.git/
+git clone https://sourceware.org/git/valgrind.git/
 
 Valgrind Developers
 -------------------
diff --git a/nightly/README.txt b/nightly/README.txt
index 0592dc43a..f345468a2 100644
--- a/nightly/README.txt
+++ b/nightly/README.txt
@@ -33,7 +33,7 @@ To set up nightly testing for a machine, do the following.
 
 (1) Clone a shallow copy from the repository, eg:
 
-        git clone --depth 1 git://sourceware.org/git/valgrind.git/ $DIR
+        git clone --depth 1 https://sourceware.org/git/valgrind.git/ $DIR
 
     where $DIR is the name of the directory you want it to be in.
     You'll probably want to include "nightly" in the directory name.
diff --git a/nightly/bin/nightly b/nightly/bin/nightly
index 3bd5986de..d4783f95d 100755
--- a/nightly/bin/nightly
+++ b/nightly/bin/nightly
@@ -50,7 +50,7 @@ else
   MAKE=make
 fi
 
-valgrind_git_repo="git://sourceware.org/git/valgrind.git/"
+valgrind_git_repo="https://sourceware.org/git/valgrind.git/"
 
 # Must have exactly two arguments
 if [ $# -ne 2 ] ; then
diff --git a/solaris/build_solaris_package b/solaris/build_solaris_package
index 19781219d..2a1a62b7a 100755
--- a/solaris/build_solaris_package
+++ b/solaris/build_solaris_package
@@ -22,7 +22,7 @@
 # - pkgrepo set -s $repo_uri publisher/prefix=valgrind
 #
 
-GITREPO=git://sourceware.org/git/valgrind.git/
+GITREPO=https://sourceware.org/git/valgrind.git/
 TMPDIR=/var/tmp/valgrind-build
 SRCDIR=$TMPDIR/sources
 INSTALLDIR=$TMPDIR/install