diff --git a/.github/workflows/.build-osx.yml b/.github/workflows/.build-osx.yml
index ccb2004..6b9b317 100644
--- a/.github/workflows/.build-osx.yml
+++ b/.github/workflows/.build-osx.yml
@@ -51,7 +51,7 @@ jobs:
             make for-travis -j16
         shell: bash
         env: 
-          extra_targets: "aws_s2n_tls"
+          extra_targets: ""
       - name: List built dependencies
         run: make list-built
         shell: bash
@@ -60,4 +60,4 @@ jobs:
         shell: bash
         env:
           # GDAL currently doesn't build on m-chip, ref #93
-          EXPECTED_DEPS_COUNT: "${{ matrix.runs-on == 'macos-15' && 12 || 13 }}"
+          EXPECTED_DEPS_COUNT: "${{ matrix.runs-on == 'macos-15' && 11 || 12 }}"
diff --git a/.travis.yml b/.travis.yml
index c02a811..41a1032 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -62,7 +62,7 @@ jobs:
       - echo "# ubuntu-focal - prefix '$prefix'" >&2
       - export extra_targets="aws_s2n_tls"
       - echo "# ubuntu-focal - extra_targets '$extra_targets'" >&2
-      - export EXPECTED_DEPS_COUNT=13
+      - export EXPECTED_DEPS_COUNT=12
       - echo "# ubuntu-focal - Expecting to build and install $EXPECTED_DEPS_COUNT dependencies." >&2
       - make -j16 for-travis
       - make list-built
diff --git a/Makefile b/Makefile
index f2d57b9..75c0b04 100644
--- a/Makefile
+++ b/Makefile
@@ -27,10 +27,6 @@ aws_cdk=aws_sdk_cpp
 aws_cdk_tag=1.11.665
 # There is no dist - we pull this from github using a tag
 
-aws_s2n_tls=aws_s2n_tls
-aws_s2n_tls_tag=v1.6.1
-# There is no dist - we pull this from github using a tag
-
 bison=bison-3.3
 bison_dist=$(bison).tar.xz
 
@@ -217,39 +213,6 @@ aws_cdk-really-clean: aws_cdk-clean
 .PHONY: aws_cdk
 aws_cdk: aws_cdk-install-stamp
 
-# AWS s2n-tls (conditionally required by AWS SDK)
-aws_s2n_tls_src=$(src)/$(aws_s2n_tls)-$(aws_s2n_tls_tag)
-aws_s2n_tls_prefix=$(prefix)/deps
-
-$(aws_s2n_tls_src)-stamp:
-	git clone --depth 1 https://github.com/aws/s2n-tls.git --branch $(aws_s2n_tls_tag) $(aws_s2n_tls_src)
-	echo timestamp > $(aws_s2n_tls_src)-stamp
-
-aws_s2n_tls-configure-stamp:  $(aws_s2n_tls_src)-stamp
-	mkdir -p $(aws_s2n_tls_src)/build
-	(cd $(aws_s2n_tls_src)/build \
-	 && cmake .. -B . -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=$(prefix)/deps)
-	echo timestamp > aws_s2n_tls-configure-stamp
-
-aws_s2n_tls-compile-stamp: aws_s2n_tls-configure-stamp
-	(cd $(aws_s2n_tls_src)/build && cmake --build . --config=Debug --parallel)
-	echo timestamp > aws_s2n_tls-compile-stamp
-
-aws_s2n_tls-install-stamp: aws_s2n_tls-compile-stamp
-	(cd $(aws_s2n_tls_src)/build && cmake --install . --config=Debug)
-	echo timestamp > aws_s2n_tls-install-stamp
-
-aws_s2n_tls-clean:
-	-rm aws_s2n_tls-*-stamp
-	-(cd  $(aws_s2n_tls_src)/build && cmake --build . --target clean)
-
-aws_s2n_tls-really-clean: aws_s2n_tls-clean
-	-rm $(src)/$(aws_s2n_tls)-*-stamp
-	-rm -rf $(aws_s2n_tls_src)
-
-.PHONY: aws_s2n_tls
-aws_s2n_tls: aws_s2n_tls-install-stamp
-
 # JPEG
 jpeg_src=$(src)/$(jpeg)
 jpeg_prefix=$(prefix)/deps