diff --git a/2.7/alpine3.4/Dockerfile b/2.7/alpine3.4/Dockerfile
index 977e9c91e..0845301ea 100644
--- a/2.7/alpine3.4/Dockerfile
+++ b/2.7/alpine3.4/Dockerfile
@@ -63,11 +63,10 @@ RUN set -ex \
 	&& make install \
 	\
 	&& runDeps="$( \
-		scanelf --needed --nobanner --recursive /usr/local \
-			| awk '{ gsub(/,/, "\nso:", $2); print "so:" $2 }' \
-			| sort -u \
-			| xargs -r apk info --installed \
+		scanelf --needed --nobanner --format '%n#p' --recursive /usr/local \
+			| tr ',' '\n' \
 			| sort -u \
+			| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
 	)" \
 	&& apk add --virtual .python-rundeps $runDeps \
 	&& apk del .build-deps \
diff --git a/2.7/alpine3.6/Dockerfile b/2.7/alpine3.6/Dockerfile
index 161271326..8ab8cacc0 100644
--- a/2.7/alpine3.6/Dockerfile
+++ b/2.7/alpine3.6/Dockerfile
@@ -63,11 +63,10 @@ RUN set -ex \
 	&& make install \
 	\
 	&& runDeps="$( \
-		scanelf --needed --nobanner --recursive /usr/local \
-			| awk '{ gsub(/,/, "\nso:", $2); print "so:" $2 }' \
-			| sort -u \
-			| xargs -r apk info --installed \
+		scanelf --needed --nobanner --format '%n#p' --recursive /usr/local \
+			| tr ',' '\n' \
 			| sort -u \
+			| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
 	)" \
 	&& apk add --virtual .python-rundeps $runDeps \
 	&& apk del .build-deps \
diff --git a/3.4/alpine3.4/Dockerfile b/3.4/alpine3.4/Dockerfile
index ff946d65c..886c44534 100644
--- a/3.4/alpine3.4/Dockerfile
+++ b/3.4/alpine3.4/Dockerfile
@@ -75,11 +75,10 @@ RUN set -ex \
 	&& make install \
 	\
 	&& runDeps="$( \
-		scanelf --needed --nobanner --recursive /usr/local \
-			| awk '{ gsub(/,/, "\nso:", $2); print "so:" $2 }' \
-			| sort -u \
-			| xargs -r apk info --installed \
+		scanelf --needed --nobanner --format '%n#p' --recursive /usr/local \
+			| tr ',' '\n' \
 			| sort -u \
+			| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
 	)" \
 	&& apk add --virtual .python-rundeps $runDeps \
 	&& apk del .build-deps \
diff --git a/3.5/alpine3.4/Dockerfile b/3.5/alpine3.4/Dockerfile
index 9b4535f40..2235ad5e4 100644
--- a/3.5/alpine3.4/Dockerfile
+++ b/3.5/alpine3.4/Dockerfile
@@ -75,11 +75,10 @@ RUN set -ex \
 	&& make install \
 	\
 	&& runDeps="$( \
-		scanelf --needed --nobanner --recursive /usr/local \
-			| awk '{ gsub(/,/, "\nso:", $2); print "so:" $2 }' \
-			| sort -u \
-			| xargs -r apk info --installed \
+		scanelf --needed --nobanner --format '%n#p' --recursive /usr/local \
+			| tr ',' '\n' \
 			| sort -u \
+			| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
 	)" \
 	&& apk add --virtual .python-rundeps $runDeps \
 	&& apk del .build-deps \
diff --git a/3.6/alpine3.4/Dockerfile b/3.6/alpine3.4/Dockerfile
index 01e23f2b4..466a834c8 100644
--- a/3.6/alpine3.4/Dockerfile
+++ b/3.6/alpine3.4/Dockerfile
@@ -75,11 +75,10 @@ RUN set -ex \
 	&& make install \
 	\
 	&& runDeps="$( \
-		scanelf --needed --nobanner --recursive /usr/local \
-			| awk '{ gsub(/,/, "\nso:", $2); print "so:" $2 }' \
-			| sort -u \
-			| xargs -r apk info --installed \
+		scanelf --needed --nobanner --format '%n#p' --recursive /usr/local \
+			| tr ',' '\n' \
 			| sort -u \
+			| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
 	)" \
 	&& apk add --virtual .python-rundeps $runDeps \
 	&& apk del .build-deps \
diff --git a/3.6/alpine3.6/Dockerfile b/3.6/alpine3.6/Dockerfile
index e6c03e2ed..dfbfeec46 100644
--- a/3.6/alpine3.6/Dockerfile
+++ b/3.6/alpine3.6/Dockerfile
@@ -75,11 +75,10 @@ RUN set -ex \
 	&& make install \
 	\
 	&& runDeps="$( \
-		scanelf --needed --nobanner --recursive /usr/local \
-			| awk '{ gsub(/,/, "\nso:", $2); print "so:" $2 }' \
-			| sort -u \
-			| xargs -r apk info --installed \
+		scanelf --needed --nobanner --format '%n#p' --recursive /usr/local \
+			| tr ',' '\n' \
 			| sort -u \
+			| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
 	)" \
 	&& apk add --virtual .python-rundeps $runDeps \
 	&& apk del .build-deps \
diff --git a/3.7-rc/alpine3.6/Dockerfile b/3.7-rc/alpine3.6/Dockerfile
index f0d5f3fa1..699071a36 100644
--- a/3.7-rc/alpine3.6/Dockerfile
+++ b/3.7-rc/alpine3.6/Dockerfile
@@ -75,11 +75,10 @@ RUN set -ex \
 	&& make install \
 	\
 	&& runDeps="$( \
-		scanelf --needed --nobanner --recursive /usr/local \
-			| awk '{ gsub(/,/, "\nso:", $2); print "so:" $2 }' \
-			| sort -u \
-			| xargs -r apk info --installed \
+		scanelf --needed --nobanner --format '%n#p' --recursive /usr/local \
+			| tr ',' '\n' \
 			| sort -u \
+			| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
 	)" \
 	&& apk add --virtual .python-rundeps $runDeps \
 	&& apk del .build-deps \
diff --git a/Dockerfile-alpine.template b/Dockerfile-alpine.template
index 4c8d7e2c9..ba32dd119 100644
--- a/Dockerfile-alpine.template
+++ b/Dockerfile-alpine.template
@@ -69,11 +69,10 @@ RUN set -ex \
 	&& make install \
 	\
 	&& runDeps="$( \
-		scanelf --needed --nobanner --recursive /usr/local \
-			| awk '{ gsub(/,/, "\nso:", $2); print "so:" $2 }' \
-			| sort -u \
-			| xargs -r apk info --installed \
+		scanelf --needed --nobanner --format '%n#p' --recursive /usr/local \
+			| tr ',' '\n' \
 			| sort -u \
+			| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
 	)" \
 	&& apk add --virtual .python-rundeps $runDeps \
 	&& apk del .build-deps \