diff --git a/contrib/build-linux/appimage/build.sh b/contrib/build-linux/appimage/build.sh
index f69512d69..3d2583db6 100755
--- a/contrib/build-linux/appimage/build.sh
+++ b/contrib/build-linux/appimage/build.sh
@@ -13,7 +13,7 @@ CACHEDIR="$CONTRIB_APPIMAGE/.cache/appimage"
 export GCC_STRIP_BINARIES="1"
 
 # pinned versions
-PYTHON_VERSION=3.7.6
+PYTHON_VERSION=3.7.7
 PKG2APPIMAGE_COMMIT="eb8f3acdd9f11ab19b78f5cb15daa772367daf15"
 SQUASHFSKIT_COMMIT="ae0d656efa2d0df2fcac795b6823b44462f19386"
 
@@ -38,7 +38,7 @@ download_if_not_exist "$CACHEDIR/appimagetool" "https://github.com/AppImage/AppI
 verify_hash "$CACHEDIR/appimagetool" "d918b4df547b388ef253f3c9e7f6529ca81a885395c31f619d9aaf7030499a13"
 
 download_if_not_exist "$CACHEDIR/Python-$PYTHON_VERSION.tar.xz" "https://www.python.org/ftp/python/$PYTHON_VERSION/Python-$PYTHON_VERSION.tar.xz"
-verify_hash "$CACHEDIR/Python-$PYTHON_VERSION.tar.xz" "55a2cce72049f0794e9a11a84862e9039af9183603b78bc60d89539f82cf533f"
+verify_hash "$CACHEDIR/Python-$PYTHON_VERSION.tar.xz" "06a0a9f1bf0d8cd1e4121194d666c4e28ddae4dd54346de6c343206599f02136"
 
 
 
diff --git a/contrib/build-wine/prepare-wine.sh b/contrib/build-wine/prepare-wine.sh
index 74734476a..0e257c18d 100755
--- a/contrib/build-wine/prepare-wine.sh
+++ b/contrib/build-wine/prepare-wine.sh
@@ -17,7 +17,7 @@ PYINSTALLER_REPO="https://github.com/SomberNight/pyinstaller.git"
 PYINSTALLER_COMMIT=e934539374e30d1500fcdbe8e4eb0860413935b2
 # ^ tag 3.6, plus a custom commit that fixes cross-compilation with MinGW
 
-PYTHON_VERSION=3.7.6
+PYTHON_VERSION=3.7.7
 
 ## These settings probably don't need change
 export WINEPREFIX=/opt/wine64
diff --git a/contrib/osx/make_osx b/contrib/osx/make_osx
index d4f2d4734..ada15dd90 100755
--- a/contrib/osx/make_osx
+++ b/contrib/osx/make_osx
@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 
 # Parameterize
-PYTHON_VERSION=3.7.6
+PYTHON_VERSION=3.7.7
 BUILDDIR=/tmp/electrum-build
 PACKAGE=Electrum
 GIT_REPO=https://github.com/spesmilo/electrum