diff --git a/Makefile.envs b/Makefile.envs
index 2bf822d22..3f5a3dc14 100644
--- a/Makefile.envs
+++ b/Makefile.envs
@@ -111,8 +111,7 @@ export LDFLAGS_BASE=\
 	-s WASM_BIGINT \
 	$(EXTRA_LDFLAGS)
 
-export CXXFLAGS_BASE=\
-	-std=c++14
+export CXXFLAGS_BASE=
 
 export SIDE_MODULE_LDFLAGS=	$(LDFLAGS_BASE) -s SIDE_MODULE=1
 export MAIN_MODULE_LDFLAGS= $(LDFLAGS_BASE) \
diff --git a/docs/project/changelog.md b/docs/project/changelog.md
index faa89ba25..3d2e5fbe2 100644
--- a/docs/project/changelog.md
+++ b/docs/project/changelog.md
@@ -120,6 +120,8 @@ myst:
 
 - Upgraded scipy to 1.11.1 {pr}`3794`, {pr}`3996`
 
+- Upgraded numpy to 1.25.2 {pr}`4125`
+
 - OpenBLAS has been added and scipy now uses OpenBLAS rather than CLAPACK
   {pr}`3331`.
 
diff --git a/packages/matplotlib/meta.yaml b/packages/matplotlib/meta.yaml
index b98395e6e..adc8217b6 100644
--- a/packages/matplotlib/meta.yaml
+++ b/packages/matplotlib/meta.yaml
@@ -28,6 +28,8 @@ build:
     -s USE_LIBPNG=1
     -s USE_ZLIB=1
     -fno-lto
+  cxxflags: |
+    -std=c++14
   script: export SETUPTOOLS_SCM_PRETEND_VERSION=$PKG_VERSION
   post: |
     cd $WHEELDIR
diff --git a/packages/numpy/meta.yaml b/packages/numpy/meta.yaml
index 9bfe05a06..1b6043195 100644
--- a/packages/numpy/meta.yaml
+++ b/packages/numpy/meta.yaml
@@ -1,13 +1,13 @@
 package:
   name: numpy
-  version: 1.24.3
+  version: 1.25.2
   tag:
     - min-scipy-stack
   top-level:
     - numpy
 source:
-  url: https://files.pythonhosted.org/packages/2c/d4/590ae7df5044465cc9fa2db152ae12468694d62d952b1528ecff328ef7fc/numpy-1.24.3.tar.gz
-  sha256: ab344f1bf21f140adab8e47fdbc7c35a477dc01408791f8ba00d018dd0bc5155
+  url: https://files.pythonhosted.org/packages/a0/41/8f53eff8e969dd8576ddfb45e7ed315407d27c7518ae49418be8ed532b07/numpy-1.25.2.tar.gz
+  sha256: fd608e19c8d7c55021dffd43bfe5492fab8cc105cc8986f813f8c3c048b38760
 
 build:
   backend-flags: --disable-optimization